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Hýžďalová M, Procházková J, Straková N, Pěnčíková K, Strapáčová S, Slováčková J, Kajabová S, Líbalová H, Topinka J, Kabátková M, Vondráček J, Mollerup S, Machala M. Transcriptional and phenotypical alterations associated with a gradual benzo[a]pyrene-induced transition of human bronchial epithelial cells into mesenchymal-like cells. Environ Toxicol Pharmacol 2024:104424. [PMID: 38522766 DOI: 10.1016/j.etap.2024.104424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 03/20/2024] [Indexed: 03/26/2024]
Abstract
The role of benzo[a]pyrene (BaP), a prominent genotoxic carcinogen and aryl hydrocarbon receptor (AhR) ligand, in tumor progression remains poorly characterized. We investigated the impact of BaP on the process of epithelial-mesenchymal transition (EMT) in normal human bronchial epithelial HBEC-12KT cells. Early morphological changes after 2-week exposure were accompanied with induction of SERPINB2, IL1, CDKN1A/p21 (linked with cell cycle delay) and chemokine CXCL5. After 8-week exposure, induction of cell migration and EMT-related pattern of markers/regulators led to induction of further pro-inflammatory cytokines or non-canonical Wnt pathway ligand WNT5A. This trend of up-regulation of pro-inflammatory genes and non-canonical Wnt pathway constituents was observed also in the BaP-transformed HBEC-12KT-B1 cells. In general, transcriptional effects of BaP differed from those of TGFβ1, a prototypical EMT inducer, or a model non-genotoxic AhR ligand, TCDD. Carcinogenic polycyclic aromatic hydrocarbons could thus induce a unique set of molecular changes linked with EMT and cancer progression.
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Affiliation(s)
- Martina Hýžďalová
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Jiřina Procházková
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic; Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Kralovopolska 135, 61265 Brno, Czech Republic
| | - Nicol Straková
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Kateřina Pěnčíková
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Simona Strapáčová
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Jana Slováčková
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Simona Kajabová
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Helena Líbalová
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague, Czech Republic
| | - Jan Topinka
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague, Czech Republic
| | - Markéta Kabátková
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Kralovopolska 135, 61265 Brno, Czech Republic
| | - Jan Vondráček
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Kralovopolska 135, 61265 Brno, Czech Republic
| | - Steen Mollerup
- Research Group for Occupational Toxicology, The National Institute of Occupational Health in Norway, 0304 Oslo, Norway
| | - Miroslav Machala
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic.
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van Linge CCA, Hulme KD, Peters-Sengers H, Sirard JC, Goessens WHF, de Jong MD, Russell CA, de Vos AF, van der Poll T. Immunostimulatory Effect of Flagellin on MDR- Klebsiella-Infected Human Airway Epithelial Cells. Int J Mol Sci 2023; 25:309. [PMID: 38203480 PMCID: PMC10778885 DOI: 10.3390/ijms25010309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024] Open
Abstract
Pneumonia caused by multi-drug-resistant Klebsiella pneumoniae (MDR-Kpneu) poses a major public health threat, especially to immunocompromised or hospitalized patients. This study aimed to determine the immunostimulatory effect of the Toll-like receptor 5 ligand flagellin on primary human lung epithelial cells during infection with MDR-Kpneu. Human bronchial epithelial (HBE) cells, grown on an air-liquid interface, were inoculated with MDR-Kpneu on the apical side and treated during ongoing infection with antibiotics (meropenem) and/or flagellin on the basolateral and apical side, respectively; the antimicrobial and inflammatory effects of flagellin were determined in the presence or absence of meropenem. In the absence of meropenem, flagellin treatment of MDR-Kpneu-infected HBE cells increased the expression of antibacterial defense genes and the secretion of chemokines; moreover, supernatants of flagellin-exposed HBE cells activated blood neutrophils and monocytes. However, in the presence of meropenem, flagellin did not augment these responses compared to meropenem alone. Flagellin did not impact the outgrowth of MDR-Kpneu. Flagellin enhances antimicrobial gene expression and chemokine release by the MDR-Kpneu-infected primary human bronchial epithelium, which is associated with the release of mediators that activate neutrophils and monocytes. Topical flagellin therapy may have potential to boost immune responses in the lung during pneumonia.
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Affiliation(s)
- Christine C. A. van Linge
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands (A.F.d.V.); (T.v.d.P.)
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, The Netherlands
| | - Katina D. Hulme
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands
| | - Hessel Peters-Sengers
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands (A.F.d.V.); (T.v.d.P.)
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, The Netherlands
| | - Jean-Claude Sirard
- Center for Infection and Immunity of Lille, Institut Pasteur de Lille, INSERM U1019, CNRS UMR9017, CHU Lille, University Lille, 59000 Lille, France
| | - Wil H. F. Goessens
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Menno D. de Jong
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands
| | - Colin A. Russell
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands
- Department of Global Health, School of Public Health, Boston University, Boston, MA 02215, USA
| | - Alex F. de Vos
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands (A.F.d.V.); (T.v.d.P.)
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, The Netherlands
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands (A.F.d.V.); (T.v.d.P.)
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, The Netherlands
- Division of Infectious Diseases, Amsterdam University Medical Centers, University of Amsterdam, 1012 WP Amsterdam, The Netherlands
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Lee JY, Lee SM, Lee WK, Park JY, Kim DS. NAA10 Hypomethylation is associated with particulate matter exposure and worse prognosis for patients with non-small cell lung cancer. Anim Cells Syst (Seoul) 2023; 27:72-82. [PMID: 37033451 PMCID: PMC10075488 DOI: 10.1080/19768354.2023.2189934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
Airborne particulate matter (PM) is a major health hazard worldwide and is a key factor in lung cancer, which remains the most common type of malignancy and the leading cause of cancer-related deaths. DNA methylation is a critical mechanism underlying the detrimental effects of PM, however, the molecular link between PM exposure and lung cancer remains to be elucidated. N-α-acetyltransferase 10 (NAA10) is involved in the cell cycle, migration, apoptosis, differentiation, and proliferation. In order to investigate the role of NAA10 in PM-induced pathogenesis processes leading to lung cancer, we determined the expression and methylation of NAA10 in normal human bronchial epithelial (NHBE) cells treated with PM10, PM10-polycyclic aromatic hydrocarbons (PAH), and PM2.5 and evaluated the prognostic value of the NAA10 methylation status in lung cancer patients. Exposure to all PM types significantly increased the expression of NAA10 mRNA and decreased the methylation of the NAA10 promoter in NHBE cells compared with the mock-treated control. NAA10 hypomethylation was observed in 9.3% (13/140) of lung cancer tissue samples and correlated with NAA10 transcriptional upregulation. Univariate and multivariate analyses revealed that NAA10 hypomethylation was associated with decreased survival of patients with lung cancer. Therefore, these results suggest that PM-induced hypomethylation of the NAA10 may play an important role in the pathogenesis of lung cancer and may be used as a potential prognostic biomarker for lung cancer progression. Further studies with large numbers of patients are warranted to confirm our findings.
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Affiliation(s)
- Ji Yun Lee
- Department of Anatomy, BK21 Plus Biomedical Convergence Program, Daegu, Republic of Korea
| | - Su Man Lee
- Department of Graduate School for Biomedical Science & Engineering, Hanyang University, Seoul, Republic of Korea
| | - Won Kee Lee
- Department of Preventive Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jae Yong Park
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
- Jae Yong Park ;
| | - Dong Sun Kim
- Department of Anatomy, BK21 Plus Biomedical Convergence Program, Daegu, Republic of Korea
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Hong J, Tan Y, Wang Y, Wang H, Li C, Jin W, Wu Y, Ni D, Peng X. Mechanism of Interaction between hsa_circ_0002854 and MAPK1 Protein in PM 2.5-Induced Apoptosis of Human Bronchial Epithelial Cells. Toxics 2023; 11:906. [PMID: 37999558 PMCID: PMC10674430 DOI: 10.3390/toxics11110906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023]
Abstract
Fine particulate matter (PM2.5) pollution increases the risk of respiratory diseases and death, and apoptosis is an important factor in the occurrence of respiratory diseases caused by PM2.5 exposure. In addition, circular RNAs (circRNAs) can interact with proteins and widely participate in physiological and pathological processes in the body. The aim of this study was to investigate the mechanism of circRNA and protein interaction on PM2.5-induced apoptosis of human bronchial epithelial cells (16HBE) in vitro. In this study, we exposed human bronchial epithelial cells to a PM2.5 suspension with different concentration gradients for 24 h. The results showed that apoptosis of 16HBE cells after PM2.5 treatment was accompanied by cell proliferation. After exposure of PM2.5 to 16HBE cells, circRNAs related to apoptosis were abnormally expressed. We further found that the expression of hsa_circ_0002854 increased with the increase in exposure concentration. Functional analysis showed that knocking down the expression of hsa_circ_0002854 could inhibit apoptosis induced by PM2.5 exposure. We then found that hsa_circ_0002854 could interact with MAPK1 protein and inhibit MAPK1 phosphorylation, thus promoting apoptosis. Our results suggest that hsa_circ_0002854 can promote 16HBE apoptosis due to PM2.5 exposure, which may provide a gene therapy target and scientific basis for PM2.5-induced respiratory diseases.
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Affiliation(s)
- Jinchang Hong
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Yi Tan
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
| | - Yuyu Wang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
| | - Hongjie Wang
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Caixia Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
| | - Wenjia Jin
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
| | - Yi Wu
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Dechun Ni
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
| | - Xiaowu Peng
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China; (J.H.); (Y.T.); (Y.W.)
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5
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Babic M, Veljovic K, Popović N, Golic N, Radojkovic D, Stankovic M. Antioxidant effect of lactic acid bacteria in human bronchial epithelial cells exposed to cigarette smoke. J Appl Microbiol 2023; 134:lxad257. [PMID: 37951288 DOI: 10.1093/jambio/lxad257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 10/03/2023] [Accepted: 11/09/2023] [Indexed: 11/13/2023]
Abstract
AIMS Chronic lung diseases are a major and increasing global health problem, commonly caused by cigarette smoke. We aimed to explore the antioxidant effects of lactic acid bacteria (LAB) against cigarette smoke in bronchial epithelial cells. METHODS AND RESULTS The antioxidant effects of 21 heat-killed (HK) LAB strains were tested in cigarette smoke-stimulated BEAS-2B cells and 3-D bronchospheres organoids. We showed that HK Lactiplantibacillus plantarum BGPKM22 possesses antioxidant activity against cigarette smoke, resistance to hydrogen peroxide, and free radical neutralizing activity. We demonstrated that HK BGPKM22 inhibited cigarette smoke-induced expression of the Aryl hydrocarbon receptor (AhR) and Nuclear factor erythroid 2 related factor 2 (Nrf2) genes. The cell-free supernatant (SN) of BGPKM22 fully confirmed the effects of HK BGPKM22. CONCLUSIONS For the first time, we revealed that HK and SN of Lactip. plantarum BGPKM22 possess antioxidant activity and modulate AhR and Nrf2 gene expression in bronchial epithelial cells exposed to cigarette smoke.
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Affiliation(s)
- Mirjana Babic
- Laboratory for Molecular Biology, Group for Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
| | - Katarina Veljovic
- Laboratory for Molecular Microbiology, Group for Probiotics and Microbiota-Host Interaction, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
| | - Nikola Popović
- Laboratory for Molecular Microbiology, Group for Probiotics and Microbiota-Host Interaction, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
| | - Natasa Golic
- Laboratory for Molecular Microbiology, Group for Probiotics and Microbiota-Host Interaction, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
| | - Dragica Radojkovic
- Laboratory for Molecular Biology, Group for Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
| | - Marija Stankovic
- Laboratory for Molecular Biology, Group for Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Republic of Serbia
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Chun YY, Tan KS, Yu L, Pang M, Wong MHM, Nakamoto R, Chua WZ, Huee-Ping Wong A, Lew ZZR, Ong HH, Chow VT, Tran T, Yun Wang D, Sham LT. Influence of glycan structure on the colonization of Streptococcus pneumoniae on human respiratory epithelial cells. Proc Natl Acad Sci U S A 2023; 120:e2213584120. [PMID: 36943879 PMCID: PMC10068763 DOI: 10.1073/pnas.2213584120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 02/10/2023] [Indexed: 03/23/2023] Open
Abstract
Virtually all living cells are encased in glycans. They perform key cellular functions such as immunomodulation and cell-cell recognition. Yet, how their composition and configuration affect their functions remains enigmatic. Here, we constructed isogenic capsule-switch mutants harboring 84 types of capsular polysaccharides (CPSs) in Streptococcus pneumoniae. This collection enables us to systematically measure the affinity of structurally related CPSs to primary human nasal and bronchial epithelial cells. Contrary to the paradigm, the surface charge does not appreciably affect epithelial cell binding. Factors that affect adhesion to respiratory cells include the number of rhamnose residues and the presence of human-like glycomotifs in CPS. Besides, pneumococcal colonization stimulated the production of interleukin 6 (IL-6), granulocyte-macrophage colony-stimulating factor (GM-CSF), and monocyte chemoattractantprotein-1 (MCP-1) in nasal epithelial cells, which also appears to be dependent on the serotype. Together, our results reveal glycomotifs of surface polysaccharides that are likely to be important for colonization and survival in the human airway.
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Affiliation(s)
- Ye-Yu Chun
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Kai Sen Tan
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117597
| | - Lisa Yu
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- College of Art and Sciences, Cornell University, Ithaca, NY14853
| | - Michelle Pang
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Ming Hui Millie Wong
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Rei Nakamoto
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Wan-Zhen Chua
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Amanda Huee-Ping Wong
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117593
| | - Zhe Zhang Ryan Lew
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Hsiao Hui Ong
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Vincent T. Chow
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Thai Tran
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117593
| | - De Yun Wang
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
| | - Lok-To Sham
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore117545
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Gerla L, Moitra S, Pink D, Govindasamy N, Duchesne M, Reklow E, Hillaby A, May A, Lewis JD, Melenka L, Hobman TC, Mayers I, Lacy P. SARS-CoV-2-Induced TSLP Is Associated with Duration of Hospital Stay in COVID-19 Patients. Viruses 2023; 15:v15020556. [PMID: 36851770 PMCID: PMC9959394 DOI: 10.3390/v15020556] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Thymic stromal lymphopoietin (TSLP) is an epithelium-derived pro-inflammatory cytokine involved in lung inflammatory responses. Previous studies show conflicting observations in blood TSLP in COVID-19, while none report SARS-CoV-2 inducing TSLP expression in bronchial epithelial cells. Our objective in this study was to determine whether TSLP levels increase in COVID-19 patients and if SARS-CoV-2 induces TSLP expression in bronchial epithelial cells. Plasma cytokine levels were measured in patients hospitalized with confirmed COVID-19 and age- and sex-matched healthy controls. Demographic and clinical information from COVID-19 patients was collected. We determined associations between plasma TSLP and clinical parameters using Poisson regression. Cultured human nasal (HNEpC) and bronchial epithelial cells (NHBEs), Caco-2 cells, and patient-derived bronchial epithelial cells (HBECs) obtained from elective bronchoscopy were infected in vitro with SARS-CoV-2, and secretion as well as intracellular expression of TSLP was detected by immunofluorescence. Increased TSLP levels were detected in the plasma of hospitalized COVID-19 patients (603.4 ± 75.4 vs 997.6 ± 241.4 fg/mL, mean ± SEM), the levels of which correlated with duration of stay in hospital (β: 0.11; 95% confidence interval (CI): 0.01-0.21). In cultured NHBE and HBECs but not HNEpCs or Caco-2 cells, TSLP levels were significantly elevated after 24 h post-infection with SARS-CoV-2 (p < 0.001) in a dose-dependent manner. Plasma TSLP in COVID-19 patients significantly correlated with duration of hospitalization, while SARS-CoV-2 induced TSLP secretion from bronchial epithelial cells in vitro. Based on our findings, TSLP may be considered an important therapeutic target for COVID-19 treatment.
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Affiliation(s)
- Luke Gerla
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Subhabrata Moitra
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Desmond Pink
- Nanostics Inc., Edmonton, AB T6G 2E9, Canada
- Department of Oncology, University of Alberta, Edmonton, AB T6G 2H6, Canada
| | - Natasha Govindasamy
- Department of Oncology, University of Alberta, Edmonton, AB T6G 2H6, Canada
- Entos Pharmaceuticals, Edmonton, AB T6G 3Q5, Canada
| | - Marc Duchesne
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Eileen Reklow
- Department of Cell Biology, University of Alberta, Edmonton, AB T6G 2H6, Canada
| | - Angela Hillaby
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Amy May
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - John D. Lewis
- Nanostics Inc., Edmonton, AB T6G 2E9, Canada
- Department of Oncology, University of Alberta, Edmonton, AB T6G 2H6, Canada
| | - Lyle Melenka
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
- Synergy Respiratory Care, Sherwood Park, AB T6G 2E9, Canada
| | - Tom C. Hobman
- Department of Cell Biology, University of Alberta, Edmonton, AB T6G 2H6, Canada
| | - Irvin Mayers
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Paige Lacy
- Alberta Respiratory Centre (ARC) Research, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, AB T6G 2R3, Canada
- Correspondence: ; Tel.: +1-780-492-6085
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8
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Chen S, Zhu L, Li J. Fucoxanthin ameliorates oxidative injury and inflammation of human bronchial epithelial cells induced by cigarette smoke extract via the PPARγ/NF‑κB signaling pathway. Exp Ther Med 2022; 25:69. [PMID: 36605523 PMCID: PMC9798150 DOI: 10.3892/etm.2022.11768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/12/2022] [Indexed: 12/15/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a prevalent and long-term airway disease. It has been reported that fucoxanthin (FX) exhibits anti-inflammatory and antioxidant effects. However, the underlying mechanism of FX in COPD remains unknown. Therefore, to investigate the effect of FX on COPD, BEAS-2B cells were treated with cigarette smoke extract (CSE). The viability of BEAS-2B cells treated with increasing doses of FX was assessed by Cell Counting Kit-8. Lactate dehydrogenase (LDH) levels were measured using a corresponding kit. In addition, ELISA was carried out to detect the content of TNF-α, IL-1β and IL-6. Additionally, a TUNEL assay and western blot analysis were performed to assess the cell apoptosis rate. Furthermore, 2',7'-dichlorodihydrofluorescein diacetate was used to measure reactive oxygen species levels, while the contents of oxidative stress-associated indexes were determined using the corresponding kits. Bioinformatics analysis using the search tool for interactions of chemicals database predicted that peroxisome proliferator-activated receptor γ (PPARγ) may be a target of FX. The binding capacity of FTX with PPARγ was confirmed by molecular docking. The protein expression levels of the PPARγ/NF-κB signaling-associated factors were detected by western blot analysis. Finally, the regulatory mechanism of FX in COPD was revealed following cell treatment with the PPARγ inhibitor, T0070907. The results demonstrated that FX enhanced CSE-induced BEAS-2B cell viability and attenuated CSE-induced BEAS-2B cell inflammation and oxidative damage, possibly via triggering PPARγ/NF-κB signaling. Pre-treatment of BEAS-2B cells with the PPARγ inhibitor, T0070907, could reverse the protective effects of FX on CSE-induced BEAS-2B cells. Overall, the present study suggested that FX could ameliorate oxidative damage as well as inflammation in CSE-treated human bronchial epithelial in patients with COPD via modulating the PPARγ/NF-κB signaling pathway.
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Affiliation(s)
- Shaolei Chen
- Department of Nursing, Shandong College of Traditional Chinese Medicine, Yantai, Shandong 264199, P.R. China
| | - Lin Zhu
- Department of Nursing, Shandong College of Traditional Chinese Medicine, Yantai, Shandong 264199, P.R. China
| | - Jun Li
- Department of General Medicine, The Third Affiliated Hospital of Nantong University, Nantong, Jiangsu 226000, P.R. China,Correspondence to: Dr Jun Li, Department of General Medicine The Third Affiliated Hospital of Nantong University, 60 Qingnian Middle Road, Nangtong, Jiangsu 226000, P.R. China
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9
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Li A, Zhang Y, Ma Y, Xu R, Song L, Cao W, Tang X. The effects of coal dust exposure on DNA damage and repair of human bronchial epithelial cells. Toxicol Ind Health 2022; 38:389-398. [PMID: 35624533 DOI: 10.1177/07482337221100483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To explore the effects of coal dust exposure on DNA damage and repair, human bronchial epithelial BEAS-2B cells were exposed to coal dust and the cellular response was investigated. It was found that γ-H2AX foci of DNA damage appeared, γ-H2AX protein level increased, and the rate of cell apoptosis was significantly elevated when BEAS-2B cells were exposed to coal dust for a short time. Phagocytized coal dust particles, swollen mitochondria, and reduced mitochondrial membrane potential were simultaneously identified. Moreover, Caspase-9, Caspase-3, and DFF45 proteins of the mitochondrial apoptotic pathway were activated. After the cells were exposed to coal dust chronically, phosphorylation levels of DNA repair kinases (ATM/ATR, DNA-PKcs) and downstream regulatory protein AKT were significantly upregulated. γ-H2AX foci and tail DNA of the cells following treatment with cisplatin were also reduced, and the colony formation rate was improved. It was concluded that coal dust could induce DNA damage, cause mitochondrial depolarization, and activate mitochondrial apoptosis pathways in BEAS-2B cells. Additionally, activated DNA repair kinases (ATM/ATR and DNA-PKcs) and their regulatory protein AKT increased DNA repair and proliferation of BEAS-2B cells chronically exposed to coal dust.
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Affiliation(s)
- Amin Li
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Yinci Zhang
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Yongfang Ma
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Ruyue Xu
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Li Song
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Weiya Cao
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
| | - Xiaolong Tang
- Medical School, 91594Anhui University of Science & Technology, Huainan, China
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10
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Farcas MT, McKinney W, Coyle J, Orandle M, Mandler WK, Stefaniak AB, Bowers L, Battelli L, Richardson D, Hammer MA, Friend SA, Service S, Kashon M, Qi C, Hammond DR, Thomas TA, Matheson J, Qian Y. Evaluation of Pulmonary Effects of 3-D Printer Emissions From Acrylonitrile Butadiene Styrene Using an Air-Liquid Interface Model of Primary Normal Human-Derived Bronchial Epithelial Cells. Int J Toxicol 2022; 41:312-328. [PMID: 35586871 DOI: 10.1177/10915818221093605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study investigated the inhalation toxicity of the emissions from 3-D printing with acrylonitrile butadiene styrene (ABS) filament using an air-liquid interface (ALI) in vitro model. Primary normal human-derived bronchial epithelial cells (NHBEs) were exposed to ABS filament emissions in an ALI for 4 hours. The mean and mode diameters of ABS emitted particles in the medium were 175 ± 24 and 153 ± 15 nm, respectively. The average particle deposition per surface area of the epithelium was 2.29 × 107 ± 1.47 × 107 particle/cm2, equivalent to an estimated average particle mass of 0.144 ± 0.042 μg/cm2. Results showed exposure of NHBEs to ABS emissions did not significantly affect epithelium integrity, ciliation, mucus production, nor induce cytotoxicity. At 24 hours after the exposure, significant increases in the pro-inflammatory markers IL-12p70, IL-13, IL-15, IFN-γ, TNF-α, IL-17A, VEGF, MCP-1, and MIP-1α were noted in the basolateral cell culture medium of ABS-exposed cells compared to non-exposed chamber control cells. Results obtained from this study correspond with those from our previous in vivo studies, indicating that the increase in inflammatory mediators occur without associated membrane damage. The combination of the exposure chamber and the ALI-based model is promising for assessing 3-D printer emission-induced toxicity.
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Affiliation(s)
- Mariana T Farcas
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA.,Department of Pharmaceutical and Pharmacological Sciences, School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Walter McKinney
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Jayme Coyle
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Marlene Orandle
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - W Kyle Mandler
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Aleksandr B Stefaniak
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA.,Department of Pharmaceutical and Pharmacological Sciences, School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Lauren Bowers
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA.,Department of Pharmaceutical and Pharmacological Sciences, School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Lori Battelli
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Diana Richardson
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Mary A Hammer
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Sherri A Friend
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Samantha Service
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Michael Kashon
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Chaolong Qi
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Duane R Hammond
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Treye A Thomas
- Respiratory Health Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Joanna Matheson
- Respiratory Health Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Yong Qian
- Health Effects Laboratory Division, 114426National Institute for Occupational Safety and Health, Morgantown, WV, USA
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11
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Yi C, Gu T, Li Y, Zhang Q. Depression of long non-coding RNA SOX2 overlapping transcript attenuates lipopolysaccharide-induced injury in bronchial epithelial cells via miR-455-3p/phosphatase and tensin homolog axis and phosphatidylinositol 3-kinase/protein kinase B pathway. Bioengineered 2022; 13:13643-13653. [PMID: 35674016 PMCID: PMC9275861 DOI: 10.1080/21655979.2022.2083820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Airway inflammation is associated with various respiratory diseases, and previous research has confirmed that long non-coding RNAs (lncRNAs) play imperative roles in inflammatory responses. However, the function of lncRNA SOX2 overlapping transcript (SOX2-OT) in airway inflammation remains enigmatic. This study aimed to investigate the effects of SOX2-OT on lipopolysaccharide (LPS)–induced cell injury in human bronchial epithelial cells, BEAS-2B, and its potential mechanisms. The results showed increased cell apoptotic ratio, production of inflammatory cytokines, higher expression of adhesion molecules and activation of NF-κB in LPS–stimulated BEAS-2B cells. In LPS–stimulated BEAS-2B cells, SOX2-OT up-regulation and miR-455-3p down-regulation emerged simultaneously. SOX2-OT knockdown or miR-455-3p over-expression restrained LPS–induced inflammation and injury. SOX2-OT sponged to miR-455-3p and functioned as a ceRNA. In addition, phosphatase and tensin homolog (PTEN) served as an endogenous target of miR-455-3p to modulate the phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT) pathway and disturb the alleviated consequence of miR-455-3p over-expression on LPS–induced BEAS-2B cell inflammation and cell injury. Our data demonstrated that SOX2-OT plays a pivotal role in LPS–induced inflammation and injury in BEAS-2B cells and exerts its function through the miR-455-3p/PTEN axis and modulation of the PI3K/AKT pathway.
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Affiliation(s)
- Chunhua Yi
- Department of Emergency, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
| | - Tijun Gu
- Department of Emergency, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
| | - Yongchang Li
- Department of Critical Care Medicine, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
| | - Qian Zhang
- Department of Respiratory and Critical Care Medicine, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
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12
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Wellmerling J, Rayner RE, Chang SW, Kairis EL, Kim SH, Sharma A, Boyaka PN, Cormet-Boyaka E. Targeting the EGFR-ERK axis using the compatible solute ectoine to stabilize CFTR mutant F508del. FASEB J 2022; 36:e22270. [PMID: 35412656 PMCID: PMC9009300 DOI: 10.1096/fj.202100458rrr] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 11/11/2022]
Abstract
Mutations in the CFTR gene lead to cystic fibrosis, a genetic disease associated with chronic infection and inflammation and ultimately respiratory failure. The most common CF-causing mutation is F508del and CFTR modulators (correctors and potentiators) are being developed to rescue its trafficking and activity defects. However, there are currently no modulators that stabilize the rescued membrane F508del-CFTR which is endocytosed and quickly degraded resulting in a shorter half-life than wild-type (WT). We previously reported that the extracellular signal-regulated kinase (ERK) MAPK pathway is involved in CFTR degradation upon cigarette smoke exposure. Interestingly, we found that ERK phosphorylation was increased in CF human bronchial epithelial (HBE) cells (CF-HBE41o- and primary CF-HBE) compared to non-CF controls, and this was likely due to signaling by the epidermal growth factor receptor (EGFR). EGFR can be activated by several ligands, and we provide evidence that amphiregulin (AREG) is important for activating this signaling axis in CF. The natural osmolyte ectoine stabilizes membrane macromolecules. We show that ectoine decreases ERK phosphorylation, increases the half-life of rescued CFTR, and increases CFTR-mediated chloride transport in combination with the CFTR corrector VX-661. Additionally, ectoine reduces production of AREG and interleukin-8 by CF primary bronchial epithelial cells. In conclusion, EGFR-ERK signaling negatively regulates CFTR and is hyperactive in CF, and targeting this axis with ectoine may prove beneficial for CF patients.
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Affiliation(s)
- Jack Wellmerling
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Rachael E Rayner
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Sheng-Wei Chang
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Elizabeth L Kairis
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Sun Hee Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Amit Sharma
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Prosper N Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
| | - Estelle Cormet-Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, Ohio, USA
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13
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Xia B, Yuan J, Pang L, He K. Chromium [Cr(VI)] Exposure Causes Cytotoxicity of Human Bronchial Epithelial Cells (16-HBE) and Proteomic Alterations. Int J Toxicol 2022; 41:225-233. [PMID: 35341331 DOI: 10.1177/10915818221078277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hexavalent chromium [Cr(VI)] is a common industrial pollutant, and exposure may cause toxic effects in multiple organ systems and carcinogenesis, including lung cancer. However, the toxic effect of Cr(VI) on the respiratory system is poorly understood. In the present study, it was demonstrated that Cr(VI) exposure significantly decreased the viability of human bronchial epithelial cells (16-HBE) in a dose-dependent manner. Flow cytometry demonstrated that Cr(VI) enhanced the transition of 16-HBE cells from G1 to S phase and arrested S-phase progression. Reverse transcription-quantitative polymerase chain reaction analysis revealed a significant alteration in the expression of apoptosis-associated genes in Cr(VI)-treated 16-HBE cells. In addition, using two-dimensional fluorescence differential gel electrophoresis with mass spectrometry, 15 differentially expressed proteins (1 upregulated and 14 downregulated) were identified in 16-HBE cells with Cr(VI) treatment compared with controls. Functional classification revealed that these differentially expressed proteins were involved in apoptosis, cytoskeletal structure, and energy metabolism. In conclusion, these data suggested that Cr(VI) caused toxic effects in bronchial epithelial cells and the mechanisms may involve the abnormal expression of apoptosis-associated proteins, cytoskeletal proteins, and energy metabolism-associated proteins.
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Affiliation(s)
- Bo Xia
- College of Food Science and Technology, 12575Hunan Agricultural University, East Renmin Road, Changsha, China.,Key Laboratory of Modern Toxicology of Shenzhen, 568734Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Jiao Yuan
- College of Food Science and Technology, 12575Hunan Agricultural University, East Renmin Road, Changsha, China
| | - Li Pang
- College of Horticulture, 12575Hunan Agricultural University, East Renmin Road, Changsha, China
| | - Kaiwu He
- Key Laboratory of Modern Toxicology of Shenzhen, 568734Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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14
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Yue C, He M, Teng Y, Bian X. Long non-coding RNA metastasis-related lung adenocarcinoma transcript 1 (MALAT1) forms a negative feedback loop with long non-coding RNA colorectal neoplasia differentially expressed (CRNDE) in sepsis to regulate lung cell apoptosis. Bioengineered 2022; 13:8201-8207. [PMID: 35300579 PMCID: PMC9161944 DOI: 10.1080/21655979.2021.2023727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
It has been reported that long non-coding RNAs (lncRNAs) metastasis-related lung adenocarcinoma transcript 1 (MALAT1) and colorectal neoplasia differentially expressed (CRNDE) play opposite roles in sepsis. Therefore, we explored their potential interaction with sepsis. To this end, we determined MALAT1 and CRNDE levels using RT-qPCR in plasma samples collected from healthy controls (n = 60) and sepsis patients (n = 60) before and after treatment and the effects of MALAT1 and CRNDE overexpression in human bronchial epithelial cells (HBEpCs) on the expression of each other and HBEpC apoptosis. RT-qPCR analyses showed that MALAT1 was upregulated, while CRNDE was downregulated in sepsis and overexpression of MALAT1 and CRNDE downregulated the expression of each other. After proper treatment, MALAT1 was downregulated and CRNDE was upregulated in sepsis. Lipopolysaccharides (LPS) treatment of HBEpCs upregulated MALAT1 and downregulated CRNDE. Cell apoptosis analysis showed that MALAT1 overexpression promoted, while CRNDE overexpression inhibited LPS-induced HBEpC apoptosis. Moreover, CRNDE overexpression attenuated the effects of MALAT1 overexpression. Overall, MALAT1 might form a negative feedback loop with CRNDE in sepsis to regulate lung cell apoptosis.
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Affiliation(s)
- Caifang Yue
- Department of Critical Care Medicine, No. 1 Hospital Attached to Jiamusi University, Jiamusi City, P. R. China
| | - Muhan He
- Department of Critical Care Medicine, No. 1 Hospital Attached to Jiamusi University, Jiamusi City, P. R. China
| | - Yanping Teng
- Department of Critical Care Medicine, No. 1 Hospital Attached to Jiamusi University, Jiamusi City, P. R. China
| | - Xiaoli Bian
- Department of Critical Care Medicine, No. 1 Hospital Attached to Jiamusi University, Jiamusi City, P. R. China
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15
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Liu L, Huan L, Zhang Y, Wei W, Chen Z, Xu D, Huang X, Tan Y, Li H. Ubiquitin-specific protease 8 inhibits lipopolysaccharide-triggered pyroptosis of human bronchial epithelial cells by regulating PI3K/AKT and NF-κB pathways. Allergol Immunopathol (Madr) 2022; 50:96-103. [PMID: 35257552 DOI: 10.15586/aei.v50i2.568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/23/2022] [Indexed: 11/18/2022]
Abstract
Asthma, characterized by dysfunction of airway epithelial cells, is regarded as a chronic inflammatory disorder in the airway. Ubiquitin-specific protease 8 (USP8) belongs to ubiquitin proteasome system and mediates the stability of E3 ligases. The anti-inflammatory effect of USP8 has been widely investigated in distinct diseases, while the role of USP8 in asthma remains elusive. Firstly, human bronchial epithelial cells (BEAS-2B) were treated with lipopolysaccharide, which reduced the cell viability of BEAS-2B and induced the secretion of lactate dehydrogenase (LDH). Moreover, the expression of USP8 was downregulated in BEAS-2B post lipopolysaccharide treatment. Secondly, overexpression of USP8 enhanced cell viability of lipopolysaccharide-treated BEAS-2B, and reduced the LDH secretion. USP8 overexpression also attenuated lipopolysaccharide-induced upregulation of TNF-α, IL-6, and IL-1β in BEAS-2B. Thirdly, lipopolysaccharide treatment promoted the expression of NLRP3 (NLR Family Pyrin Domain Containing 3), N-terminal domain of gasdermin D (GSDMD-N), caspase-1, IL-1β, and IL-18 in BEAS-2B, which was inhibited by USP8 overexpression. Lastly, USP8 overexpression decreased the phosphorylation of NF-κB, while it increased the phosphorylation of PI3K and AKT in lipopolysaccharide-treated BEAS-2B. In conclusion, USP8 inhibited lipopolysaccharide-triggered inflammation and pyroptosis in human bronchial epithelial cells by activating PI3K/AKT signaling and inhibiting NF-κB signaling pathway.
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16
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Li J, Xu H, Li N, Du W, Ti J, Chen J. Long non-coding RNA growth arrest specific 5 is downregulated in sepsis-ALI and inhibits apoptosis by up-regulating miR-146a. Bioengineered 2022; 13:4146-4152. [PMID: 35112981 PMCID: PMC8974100 DOI: 10.1080/21655979.2021.2014619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNA (lncRNA) growth arrest specific 5 (GAS5) and microRNA (miR)-146a both have inhibitory effects on LPS-induced inflammation, suggesting the crosstalk between them. In this study, the expression of GAS5 and miR-146a in patients with sepsis-induced acute lung injury (sepsis-ALI), sepsis patients without obvious complications (sepsis) and healthy controls were studied by RT-qPCR. The role of GAS5 in the expression and methylation of miR-146a in human bronchial epithelial cells (HBEpCs) were studied by RT-qPCR and methylation-specific PCR (MSP), respectively. Cell apoptosis was analyzed by flow cytometry. We found that GAS5 and miR-146a were downregulated in sepsis-ALI and the expression of these two were correlated. LPS induced the downregulation of GAS5 and miR-146a in HBEpCs. In HBEpCs, overexpression of GAS5 increased the expression levels of miR-146a and reduced the methylation of miR-146a gene. Under lipopolysaccharide (LPS) treatment, overexpression of GAS5 and miR-146a decreased the apoptotic rate of HBEpCs. Moreover, the combined overexpression of GAS5 and miR-146a showed stronger effects. Therefore, GAS5 is downregulated in sepsis-ALI and inhibits cell apoptosis by up-regulating the expression of miR-146a.
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Affiliation(s)
- Jiaqiong Li
- Department of Critical Care Medicine, Xuzhou Central Hospital, Xuzhou Clinic School of Nanjing Medical University, Xuzhou City, Jiangsu Province, China
| | - Hongyang Xu
- Department of Lung Transplant Center, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi City, Jiangsu Province, China
| | - Na Li
- Department of Critical Care Medicine, Xuzhou Central Hospital, Xuzhou Clinic School of Nanjing Medical University, Xuzhou City, Jiangsu Province, China
| | - Wenjing Du
- Department of Critical Care Medicine, Xuzhou Central Hospital, Xuzhou Clinic School of Nanjing Medical University, Xuzhou City, Jiangsu Province, China
| | - Junxiang Ti
- Department of Critical Care Medicine, Xuzhou Central Hospital, Xuzhou Clinic School of Nanjing Medical University, Xuzhou City, Jiangsu Province, China
| | - Jingyu Chen
- Department of Lung Transplant Center, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi City, Jiangsu Province, China
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17
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Michaels WE, Pena-Rasgado C, Kotaria R, Bridges RJ, Hastings ML. Open reading frame correction using splice-switching antisense oligonucleotides for the treatment of cystic fibrosis. Proc Natl Acad Sci U S A 2022; 119:e2114886119. [PMID: 35017302 DOI: 10.1073/pnas.2114886119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2021] [Indexed: 12/11/2022] Open
Abstract
Frameshift and nonsense mutations pose a major problem for disease therapeutic development. Eliminating these mutations from the messenger RNA by inducing exon skipping is a relatively unexplored treatment approach, though it has shown promise for some diseases. Here, we show that eliminating a common stop mutation associated with cystic fibrosis (CF), by inducing the skipping of the exon it is located in, results in a restoration of the open reading frame and recovers CFTR protein function in a manner expected to be therapeutic in CF patients who don’t currently have effective treatment options. These results are an important advancement for the CF community but also have implications for other diseases where terminating mutations are responsible for dysfunction. CFTR gene mutations that result in the introduction of premature termination codons (PTCs) are common in cystic fibrosis (CF). This mutation type causes a severe form of the disease, likely because of low CFTR messenger RNA (mRNA) expression as a result of nonsense-mediated mRNA decay, as well as the production of a nonfunctional, truncated CFTR protein. Current therapeutics for CF, which target residual protein function, are less effective in patients with these types of mutations due in part to low CFTR protein levels. Splice-switching antisense oligonucleotides (ASOs), designed to induce skipping of exons in order to restore the mRNA open reading frame, have shown therapeutic promise preclinically and clinically for a number of diseases. We hypothesized that ASO-mediated skipping of CFTR exon 23 would recover CFTR activity associated with terminating mutations in the exon, including CFTR p.W1282X, the fifth most common mutation in CF. Here, we show that CFTR lacking the amino acids encoding exon 23 is partially functional and responsive to corrector and modulator drugs currently in clinical use. ASO-induced exon 23 skipping rescued CFTR expression and chloride current in primary human bronchial epithelial cells isolated from a homozygote CFTR-W1282X patient. These results support the use of ASOs in treating CF patients with CFTR class I mutations in exon 23 that result in unstable CFTR mRNA and truncations of the CFTR protein.
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18
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Xue X, Meng L, Cai H, Sun Y, Zhang Y, Li H, Kang Y, Zhou B, Shang F, Guan W, Zhang L, Chen X, Zhang L. Xuanfei Pingchuan Capsules Ameliorate Autophagy in Human Bronchial Epithelial Cells by Inhibiting p38 Phosphorylation. Front Pharmacol 2021; 12:748234. [PMID: 34925010 PMCID: PMC8678282 DOI: 10.3389/fphar.2021.748234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Background: This study aimed to investigate the protective effect of Xuanfei Pingchuan Capsules (XFPC) on autophagy and p38 phosphorylation in human bronchial epithelial (HBE) cells induced by cigarette smoke extract (CSE). Methods: HBE cells were divided into five groups: blank, CSE, low XFPC dose (XFPC-L), medium XFPC dose (XFPC-M), and high XFPC dose (XFPC-H). HBE cells were induced by CSE to establish a cell model for chronic obstructive pulmonary disease, and different doses of XFPC medicated serum were used to treat the cells. The Cell Counting Kit-8 was used to detect cell viability. Flow cytometry was used to detect cell apoptosis. Fluorescence microscopy and the expression level of microtubule-associated protein light chain 3 (LC3)-II in immunohistochemical method were used to observe autophagy in cells. Western blot was used to detect the protein expression level of p38, phospho-p38 (p-p38), LC3-I, LC3-II and Beclin 1. Real-time polymerase chain reaction was used to detect the expression of LC3-I, LC3-II and Beclin 1 on mRNA level. Results: Compared with the blank group, the cell viability of the CSE group was significantly decreased, and apoptosis and the level of autophagy in cells were significantly increased. The mRNA and protein expression of LC3-I, LC3-II, Beclin 1 and the protein level of p-p38 were significantly increased in the CSE-HBE cells. Compared to the CSE group, the different doses of XFPC medicated serum increased cell viability, decreased cell apoptosis, and inhibited mRNA and protein expression of LC3-I, LC3-II, Beclin 1 and protein level of p-p38. These results were especially observed in the group XFPC-H. After adding a p38 agonist, the therapeutic effect of XFPC on cell viability and autophagy was suppressed. Conclusion: XFPC significantly increased cell viability in a CSE-induced HBE cell model for chronic obstructive pulmonary disease through inhibiting the level of autophagy mediated by phosphorylation of p38.
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Affiliation(s)
- Xiaoming Xue
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Lihong Meng
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Hongyu Cai
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Yaoqin Sun
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Ye Zhang
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Hao Li
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Yu Kang
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Bobo Zhou
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Fang Shang
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Wei Guan
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Li Zhang
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Xu Chen
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
| | - Luodan Zhang
- Department of Respiration, Shanxi Traditional Chinese Medicine Hospital, Taiyuan, China
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Long C, Qi M, Wang J, Luo J, Qin X, Gao G, Xiang Y. Respiratory syncytial virus persistent infection causes acquired CFTR dysfunction in human bronchial epithelial cells. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2021; 46:949-957. [PMID: 34707004 PMCID: PMC10930179 DOI: 10.11817/j.issn.1672-7347.2021.210210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Many studies have shown that respiratory syncytial virus persistent infection may be the main cause of chronic respiratory pathology.However, the mechanism is unclear. Cystic fibrosis transmembrane conduction regulator (CFTR) is an apical membrane chloride channel, which is very important for the regulation of epithelial fluid, chloride ion, and bicarbonate transport. CFTR dysfunction will lead to changes in bronchial secretions and impair mucus clearance, which is related to airway inflammation. In our previous study, we observed the down-regulation of CFTR in airway epithelial cells in respiratory syncytial virus (RSV) infected mouse model. In this study, we further investigated the expression and function of CFTR by constructing an airway epithelial cell model of RSV persistent infection. METHODS 16HBE14o- cells were infected with RSV at 0.01 multiplicity of infection (MOI). The expression of CFTR was detected by real-time RT-PCR, immunofluorescence, and Western blotting. The intracellular chloride concentration was measured by N-(ethoxycarbonylmethyl)-6-methoxyquinolium bromide (MQAE) and the chloride current was measured by whole-cell patch clamp recording. RESULTS 16HBE14o- cells infected with RSV were survived to successive passages of the third generation (G3), while the expression and function of CFTR was progressively decreased upon RSV infection from the first generation (G1) to G3. Exposure of 16HBE14o- cells to RSV led to the gradual increase of TGF-β1 as well as phosphorylation of Smad2 following progressive RSV infection. Disruption of TGF-β1 signaling by SB431542 prevented Smad2 phosphorylation and rescued the expression of CFTR. CONCLUSIONS RSV infection can lead to defective CFTR function in airway epithelial cells, which may be mediated via activation of TGF-β1 signaling pathway.
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Affiliation(s)
- Chunjiao Long
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410013.
- Department of Nephrology Medicine, Third Xiangya Hospital, Central South University, Changsha 410013.
| | - Mingming Qi
- Department of Obstetrics, Zhuzhou Central Hospital/Zhuzhou Hospital Affiliated to Xiangya School of Medicine, Central South University, Zhuzhou Hunan 412007
| | - Jinmei Wang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410013
| | - Jinhua Luo
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410013
| | - Xiaoqun Qin
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410013
| | - Ge Gao
- Department of Laboratory Medicine, Third Xiangya Hospital, Central South University, Changsha 410013.
- Department of Medical Laboratory Science, Xiangya School of Medicine, Central South University, Changsha 410013, China.
| | - Yang Xiang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410013.
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Pell TJ, Gray MB, Hopkins SJ, Kasprowicz R, Porter JD, Reeves T, Rowan WC, Singh K, Tvermosegaard KB, Yaqub N, Wayne GJ. Epithelial Barrier Integrity Profiling: Combined Approach Using Cellular Junctional Complex Imaging and Transepithelial Electrical Resistance. SLAS Discov 2021; 26:909-921. [PMID: 34085560 DOI: 10.1177/24725552211013077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A core aspect of epithelial cell function is barrier integrity. A loss of barrier integrity is a feature of a number of respiratory diseases, including asthma, allergic rhinitis, and chronic obstructive pulmonary disease. Restoration of barrier integrity is a target for respiratory disease drug discovery. Traditional methods for assessing barrier integrity have their limitations. Transepithelial electrical resistance (TEER) and dextran permeability methods can give poor in vitro assay robustness. Traditional junctional complex imaging approaches are labor-intensive and tend to be qualitative but not quantitative. To provide a robust and quantitative assessment of barrier integrity, high-content imaging of junctional complexes was combined with TEER. A scalable immunofluorescent high-content imaging technique, with automated quantification of junctional complex proteins zonula occludens-1 and occludin, was established in 3D pseudostratified primary human bronchial epithelial cells cultured at an air-liquid interface. Ionic permeability was measured using TEER on the same culture wells.The improvements to current technologies include the design of a novel 24-well holder to enable scalable in situ confocal cell imaging without Transwell membrane excision, the development of image analysis pipelines to quantify in-focus junctional complex structures in each plane of a Z stack, and the enhancement of the TEER data analysis process to enable statistical evaluation of treatment effects on barrier integrity. This novel approach was validated by demonstrating measurable changes in barrier integrity in cells grown under conditions known to perturb epithelial cell function.
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Affiliation(s)
| | - Mike B Gray
- GlaxoSmithKline R&D, Stevenage, Hertfordshire, UK
| | | | | | | | - Tony Reeves
- GlaxoSmithKline R&D, Stevenage, Hertfordshire, UK
| | | | - Kuljit Singh
- GlaxoSmithKline R&D, Stevenage, Hertfordshire, UK
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Sek A, Kampa RP, Kulawiak B, Szewczyk A, Bednarczyk P. Identification of the Large-Conductance Ca 2+-Regulated Potassium Channel in Mitochondria of Human Bronchial Epithelial Cells. Molecules 2021; 26:molecules26113233. [PMID: 34072205 PMCID: PMC8199365 DOI: 10.3390/molecules26113233] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 12/18/2022] Open
Abstract
Mitochondria play a key role in energy metabolism within the cell. Potassium channels such as ATP-sensitive, voltage-gated or large-conductance Ca2+-regulated channels have been described in the inner mitochondrial membrane. Several hypotheses have been proposed to describe the important roles of mitochondrial potassium channels in cell survival and death pathways. In the current study, we identified two populations of mitochondrial large-conductance Ca2+-regulated potassium (mitoBKCa) channels in human bronchial epithelial (HBE) cells. The biophysical properties of the channels were characterized using the patch-clamp technique. We observed the activity of the channel with a mean conductance close to 285 pS in symmetric 150/150 mM KCl solution. Channel activity was increased upon application of the potassium channel opener NS11021 in the micromolar concentration range. The channel activity was completely inhibited by 1 µM paxilline and 300 nM iberiotoxin, selective inhibitors of the BKCa channels. Based on calcium and iberiotoxin modulation, we suggest that the C-terminus of the protein is localized to the mitochondrial matrix. Additionally, using RT-PCR, we confirmed the presence of α pore-forming (Slo1) and auxiliary β3-β4 subunits of BKCa channel in HBE cells. Western blot analysis of cellular fractions confirmed the mitochondrial localization of α pore-forming and predominately β3 subunits. Additionally, the regulation of oxygen consumption and membrane potential of human bronchial epithelial mitochondria in the presence of the potassium channel opener NS11021 and inhibitor paxilline were also studied. In summary, for the first time, the electrophysiological and functional properties of the mitoBKCa channel in a bronchial epithelial cell line were described.
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Affiliation(s)
- Aleksandra Sek
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland; (A.S.); (R.P.K.); (B.K.); (A.S.)
- Faculty of Chemistry, University of Warsaw, 02-093 Warsaw, Poland
| | - Rafal P. Kampa
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland; (A.S.); (R.P.K.); (B.K.); (A.S.)
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences—SGGW, 02-776 Warsaw, Poland
| | - Bogusz Kulawiak
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland; (A.S.); (R.P.K.); (B.K.); (A.S.)
| | - Adam Szewczyk
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland; (A.S.); (R.P.K.); (B.K.); (A.S.)
| | - Piotr Bednarczyk
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences—SGGW, 02-776 Warsaw, Poland
- Correspondence: ; Tel.: +48-22-593-8620
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Wang J, Tian X, Zhang J, Tan L, Ouyang N, Jia B, Chen C, Ge C, Li J. Postchronic Single-Walled Carbon Nanotube Exposure Causes Irreversible Malignant Transformation of Human Bronchial Epithelial Cells through DNA Methylation Changes. ACS Nano 2021; 15:7094-7104. [PMID: 33761739 DOI: 10.1021/acsnano.1c00239] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As environmental pollutants and possible carcinogens, carbon nanotubes (CNTs) have recently been found to induce carcinogenesis and tumor metastasis after long-term pulmonary exposure. However, whether CNT-induced carcinogenesis can be inherited and last for generations remains unclear. Herein, postchronic single-walled carbon nanotubes (SWCNTs) exposed human lung cell model (BEAS-2B cells) are established to investigate SWCNT-induced carcinogenesis. At a tolerated sublethal dose level, postchronic SWCNT exposure significantly increases the migration and invasion abilities of BEAS-2B cells, leading to malignant cell transformation. Notably, the malignant transformation of BEAS-2B cells is irreversible within a 60 day recovery period after SWCNT exposure, and the malignant transformation activities of cells gradually increase during the recovery period. Moreover, these transformed cells promote carcinogenesis in vivo, accompanied by a raised level of biomarkers of lung adenocarcinoma. Further mechanism analyses reveal that postchronic exposure to SWCNTs causes substantial DNA methylation and transcriptome dysregulation of BEAS-2B cells. Subsequent enrichment and clinical database analyses reveal that differentially expressed/methylated genes of BEAS-2B cells are enriched in cancer-related biological pathways. These results not only demonstrate that postchronic SWCNT-exposure-induced carcinogenesis is heritable but also uncover a mechanism from the perspective of DNA methylation.
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Affiliation(s)
- Jin Wang
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
| | - Xin Tian
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Jie Zhang
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
| | - Lirong Tan
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
| | - Nan Ouyang
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
| | - Beibei Jia
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
| | - Chunying Chen
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences, Beijing 100190, China
| | - Cuicui Ge
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Jianxiang Li
- Department of Toxicology, School of Public Health, Medicine College, Soochow University, Suzhou 215123, China
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23
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Wang H, Liu J, Kong Q, Li L, Gao J, Fang L, Liu Z, Fan X, Li C, Lu Q, Qian A. Cytotoxicity and inflammatory effects in human bronchial epithelial cells induced by polycyclic aromatic hydrocarbons mixture. J Appl Toxicol 2021; 41:1803-1815. [PMID: 33782999 DOI: 10.1002/jat.4164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 01/24/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are the most common contaminants in the air pollutants. Inhalation exposure to PAHs could increase the risk of respiratory disease, cardiovascular disease and even cancer. However, the biotoxicity of multi-component PAHs from atmospheric pollutants has been poorly studies. The main topic of this study was to investigate the PAHs mixture, which derived from atmospheric pollutants, induced toxic effects and inflammatory effects on human bronchial epithelial cells in vitro. The results showed that PAHs mixture could decrease the cell viability, increase the apoptosis rate, and induce cell cycle arrest at S-phase. Furthermore, the expression of inflammatory factors IL-1β and IL-6 were increased and NF-κB signaling pathway was activated in PAHs mixture-treated cells. The findings of this study indicate that PAHs mixture-induced cytotoxicity and inflammation may be related to intracellular ROS generation and to the activated NF-κB signaling pathway.
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Affiliation(s)
- Hong Wang
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.,Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Jinren Liu
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Qingbo Kong
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Liang Li
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Junhong Gao
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Le Fang
- Department of Clinical Laboratory, 521 Hospital of Ordnance Industry, Xi'an, China
| | - Zhiyong Liu
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.,Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Xiaolin Fan
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Cunzhi Li
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Qing Lu
- Biological Effects and Technology Division, Institute for Hygiene of Ordnance Industry, Xi'an, China
| | - Airong Qian
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
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Aimonen K, Suhonen S, Hartikainen M, Lopes VR, Norppa H, Ferraz N, Catalán J. Role of Surface Chemistry in the In Vitro Lung Response to Nanofibrillated Cellulose. Nanomaterials (Basel) 2021; 11:389. [PMID: 33546402 DOI: 10.3390/nano11020389] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/29/2021] [Accepted: 01/30/2021] [Indexed: 12/18/2022]
Abstract
Wood-derived nanofibrillated cellulose (NFC) has emerged as a sustainable material with a wide range of applications and increasing presence in the market. Surface charges are introduced during the preparation of NFC to facilitate the defibrillation process, which may also alter the toxicological properties of NFC. In the present study, we examined the in vitro toxicity of NFCs with five surface chemistries: nonfunctionalized, carboxymethylated, phosphorylated, sulfoethylated, and hydroxypropyltrimethylammonium-substituted. The NFC samples were characterized for surface functional group density, surface charge, and fiber morphology. Fibril aggregates predominated in the nonfunctionalized NFC, while individual nanofibrils were observed in the functionalized NFCs. Differences in surface group density among the functionalized NFCs were reflected in the fiber thickness of these samples. In human bronchial epithelial (BEAS-2B) cells, all NFCs showed low cytotoxicity (CellTiter-GloVR luminescent cell viability assay) which never exceeded 10% at any exposure time. None of the NFCs induced genotoxic effects, as evaluated by the alkaline comet assay and the cytokinesis-block micronucleus assay. The nonfunctionalized and carboxymethylated NFCs were able to increase intracellular reactive oxygen species (ROS) formation (chloromethyl derivative of 2′,7′-dichlorodihydrofluorescein diacetate assay). However, ROS induction did not result in increased DNA or chromosome damage.
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Ma S, Wang Q, Xie G, Guo H, Song J, Wuhan B, Xu J. [Role of LINC00310 in the glycidyl methacrylate-induced malignant transformation of human bronchial epithelial cell]. Wei Sheng Yan Jiu 2020; 49:711-723. [PMID: 33070810 DOI: 10.19813/j.cnki.weishengyanjiu.2020.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the expression and biological significance of LINC00310 in the malignant transformation of human bronchial epithelial cells(16 HBE) induced by glycidyl methacrylate(GMA). METHODS The 16 HBE cells recovered successfully used 1 μg/mL dimethyl sulfoxide(DMSO) as the solvent control group, and the final concentration was 8 μg/mL GMA as the treatment group, and were subcultured after repeated exposure 3 times for 72 hours each time. The 10 th, 20 th and 30 th generation cells of the GMA treatment group and corresponding DMSO control group were collected. The LncRNA microarrays was used to analyze the expression changes of LINC00310 in different periods, and the target gene and function prediction was performed by NCBI and cBioPortal bioinformatics database, and real-time quantification PCR(qPCR) was used to detect the relative expression levels of LINC00310 and predicted target genes. RESULTS The result of the microarray showed that LINC00310 in the GMA-treated group was down-regulated by 2. 02-fold, up-regulated by 6. 17-fold, and up-regulated by 2. 03-fold in the pre-transformation, mid-term, and late, respectively. The result of qPCR confirmed that the expression of LINC00310 relative expression level of 10 th, 20 th and 30 th generation cells was consistent with the microarray result, which were down-regulated by 2. 76-fold, up-regulated by 2. 68-fold, and up-regulated by 3. 09-fold. Consistently, the relative expression of the target gene C-Myc was statistically significant in 20 th and 30 th generation cells. CONCLUSION LINC00310 induced low expression in the early stage of malignant transformation of 16 HBE cells induced by GMA, and was highly expressed in the middle and late stages. It indicated that LINC00310 may play a cancer-promoting role in the process of cell malignant transformation through C-Myc.
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Affiliation(s)
- Shunpeng Ma
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Quankai Wang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China Key Laboratory of Chemical Safety and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Guangyun Xie
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Haoran Guo
- Center for Disease Control and Prevention of Xinbei District, Changzhou, Changzhou 213022, China
| | - Jiayang Song
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Baolier Wuhan
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Jianning Xu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China Key Laboratory of Chemical Safety and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Cassagnes LE, Zaira L, Håland A, Bell D, Zhu L, Bertrand A, Baltensperger U, El Haddad I, Wisthaler A, Geiser M, Dommen J. Online monitoring of volatile organic compounds emitted from human bronchial epithelial cells as markers for oxidative stress. J Breath Res 2020; 15. [PMID: 33045691 DOI: 10.1088/1752-7163/abc055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/12/2020] [Indexed: 11/11/2022]
Abstract
Particulate air pollution is associated with adverse respiratory effects and is a major factor for premature deaths. In-vitro assays are commonly used for investigating the direct cytotoxicity and inflammatory impacts due to particulate matter (PM) exposure. However, biological tests are often labor-intensive, destructive and limited to endpoints measured offline at single time points, making it impossible to observe the progression of cell response upon exposure. Here we explored the potential of a high-resolution proton transfer reaction mass spectrometer (PTR-MS) to detect the volatile organic compounds (VOCs) emitted by human bronchial epithelial cells (BEAS-2B) upon exposure to PM. Cells were exposed to single components (1,4-naphthoquinone and Cu(II)) known to induce oxidative stress. We also tested filter extracts of aerosols generated in a smog chamber, including fresh and aged wood burning emissions, as well as α-pinene secondary organic aerosol (SOA). We found that 1,4-naphthoquinone was rapidly internalized by the cells. Exposing cells to each of these samples induced the emission of VOCs, which we tentatively assigned to acetonitrile, benzaldehyde and dimethylbenzaldehyde, respectively. Emission rates upon exposure to fresh and aged organic aerosol from α-pinene oxidation and from biomass burning significantly exceeded those observed after exposure to similar doses of Cu(II), a proxy for transition metals with high oxidative potential. Emission rates of biomarkers from cell exposure to α-pinene SOA exhibited a statistically significant, but weak dose dependence. The emission rates of benzaldehyde scaled with cell death, estimated by measuring the apical release of cytosolic lactate dehydrogenase. Particle mass doses delivered to the BEAS-2B cells match those deposited in the human tracheobronchial tract after several hours of inhalation at elevated ambient air pollution. The results presented here show that our method has the potential to determine biomarkers of PM induced pulmonary damage in toxicological and epidemiological research on air pollution.
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Affiliation(s)
| | - Leni Zaira
- University of Bern, Bern, BE, SWITZERLAND
| | | | - David Bell
- Paul Scherrer Institute, Villigen, SWITZERLAND
| | | | | | | | | | | | | | - Josef Dommen
- Paul Scherrer Institute Laboratory of Atmospheric Chemistry, Villigen, 5232, SWITZERLAND
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Yang YY, Lin CJ, Wang CC, Chen CM, Kao WJ, Chen YH. Consecutive Hypoxia Decreases Expression of NOTCH3, HEY1, CC10, and FOXJ1 via NKX2-1 Downregulation and Intermittent Hypoxia-Reoxygenation Increases Expression of BMP4, NOTCH1, MKI67, OCT4, and MUC5AC via HIF1A Upregulation in Human Bronchial Epithelial Cells. Front Cell Dev Biol 2020; 8:572276. [PMID: 33015064 PMCID: PMC7500169 DOI: 10.3389/fcell.2020.572276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 08/17/2020] [Indexed: 01/11/2023] Open
Abstract
Previous studies have shown that the experimental models of hypoxia-reoxygenation (H/R) mimics the physiological conditions of ischemia-reperfusion and induce oxidative stress and injury in various types of organs, tissues, and cells, both in vivo and in vitro, including human lung adenocarcinoma epithelial cells. Nonetheless, it had not been reported whether H/R affected proliferation, apoptosis, and expression of stem/progenitor cell markers in the bronchial epithelial cells. In this study, we investigated differential effects of consecutive hypoxia and intermittent 24/24-h cycles of H/R on human bronchial epithelial (HBE) cells derived from the same-race and age-matched healthy subjects (i.e., NHBE) and subjects with chronic obstructive pulmonary disease (COPD) (i.e., DHBE). To analyze gene/protein expression during differentiation, both the NHBE and DHBE cells at the 2nd passage were cultured at the air-liquid interface (ALI) in the differentiation medium under normoxia for 3 days, followed by either culturing under hypoxia (1% O2) for consecutively 9 days and then returning to normoxia for another 9 days, or culturing under 24/24-h cycles of H/R (i.e., 24 h of 1% O2 followed by 24 h of 21% O2, repetitively) for 18 days in total, so that all differentiating HBE cells were exposed to hypoxia for a total of 9 days. In both the normal and diseased HBE cells, intermittent H/R significantly increased HIF1A, BMP4, NOTCH1, MKI67, OCT4, and MUC5AC expression, while consecutive hypoxia significantly decreased NKX2-1, NOTCH3, HEY1, CC10, and FOXJ1 expression. Inhibition of HIF1A or NKX2-1 expression by siRNA transfection respectively decreased BMP4/NOTCH1/MKI67/OCT4/MUC5AC and NOTCH3/HEY1/CC10/FOXJ1 expression in the HBE cells cultured under intermittent H/R to the same levels under normoxia. Overexpression of NKX2-1 via cDNA transfection caused more than 2.8-fold increases in NOTCH3, HEY1, and FOXJ1 mRNA levels in the HBE cells cultured under consecutive hypoxia compared to the levels under normoxia. Taken together, our results show for the first time that consecutive hypoxia decreased expression of the co-regulated gene module NOTCH3/HEY1/CC10 and the ciliogenesis-inducing transcription factor gene FOXJ1 via NKX2-1 mRNA downregulation, while intermittent H/R increased expression of the co-regulated gene module BMP4/NOTCH1/MKI67/OCT4 and the predominant airway mucin gene MUC5AC via HIF1A mRNA upregulation.
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Affiliation(s)
- Yung-Yu Yang
- Department of General Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chao-Ju Lin
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Chin Wang
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan.,Section of Respiratory Therapy, Rueifang Miner Hospital, New Taipei City, Taiwan
| | - Chieh-Min Chen
- Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Wen-Jen Kao
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Yi-Hui Chen
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
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Canivet L, Denayer FO, Dubot P, Garçon G, Lo Guidice JM. Toxicity of iron nanoparticles towards primary cultures of human bronchial epithelial cells. J Appl Toxicol 2020; 41:203-215. [PMID: 32767597 DOI: 10.1002/jat.4033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/26/2020] [Accepted: 05/26/2020] [Indexed: 11/08/2022]
Abstract
Air pollution is a public health issue and the toxicity of ambient particulate matter (PM) is well-recognized. Although it does not mostly contribute to the total mass of PM, increasing evidence indicates that the ultrafine fraction has generally a greater toxicity than the others do. A better knowledge of the underlying mechanisms involved in the pathological disorders related to nanoparticles (NPs) remains essential. Hence, the goal of this study was to determine better whether the exposure to a relatively low dose of well-characterized iron-rich NPs (Fe-NPs) might alter some critical toxicological endpoints in a relevant primary culture model of human bronchial epithelial cells (HBECs). We sought to use Fe-NPs representative of those frequently found in the industrial smokes of metallurgical industries. After having noticed the effective internalization of Fe-NPs, oxidative, inflammatory, DNA repair, and apoptotic endpoints were investigated within HBECs, mainly through transcriptional screening. Taken together, these results revealed that, despite it only produced relatively low levels of reactive oxygen species without any significant oxidative damage, low-dose Fe-NPs quickly significantly deregulated the transcription of some target genes closely involved in the proinflammatory response. Although this inflammatory process seemed to stay under control over time in case of this acute scenario of exposure, the future study of its evolution after a scenario of repeated exposure could be very interesting to evaluate the toxicity of Fe-NPs better.
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Affiliation(s)
- Ludivine Canivet
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPECS-IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France
| | - Franck-Olivier Denayer
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPECS-IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France
| | - Pierre Dubot
- CNRS UMR 7182, Métaux et céramiques à microstructure contrôlée, Institut de Chimie et des Matériaux, Paris Est, Thiais, France
| | - Guillaume Garçon
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPECS-IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France
| | - J-M Lo Guidice
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPECS-IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France
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29
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He Z, Li Y, Lian Z, Liu J, Xian H, Jiang R, Hu Z, Fang D, Hu D. Exosomal secretion may be a self-protective mechanism of its source cells under environmental stress: A study on human bronchial epithelial cells treated with hydroquinone. J Appl Toxicol 2020; 41:265-275. [PMID: 32725655 DOI: 10.1002/jat.4043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/30/2020] [Accepted: 07/08/2020] [Indexed: 01/21/2023]
Abstract
Accumulating evidence reveals that exosome plays an important role in cell-to-cell communication in both physiological and pathological processes by transferring bioactive molecules. However, the role of exosomal secretion in the adaption of its source cells to the stimuli of environmental chemicals remains elusive. In this study, we revealed that the exposure of hydroquinone (HQ; the main bioactive metabolite of benzene) to human bronchial epithelial cells (16HBE) resulted in decreased ability of cell proliferation and migration, and simultaneously DNA damage and micronuclei formation. Interestingly, when exosomal secretion of HQ treated 16HBE cells was inhibited with the inhibitor GW4869, cellular proliferation and migration were further significantly reduced; concurrently, their DNA damage and micronuclei formation were both further significantly aggravated. Herein, we conclude that exosomal secretion of 16HBE cells may be an important self-protective function against the toxic effects induced by HQ.
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Affiliation(s)
- Zhonghan He
- Shiyan Institute of Preventive Medicine and Health Care, Shenzhen City, China.,Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yanfeng Li
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhenwei Lian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Jin Liu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China.,Department of Rehabilitation Medicine, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Hongyi Xian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Ran Jiang
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zuqing Hu
- Department of Clinical Medicine, Jiamusi University, China
| | - Daokui Fang
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China.,Department of Environmental Health, Center for Disease Control and Prevention of Shenzhen City, Shenzhen, China
| | - Dalin Hu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
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Niu BY, Li WK, Li JS, Hong QH, Khodahemmati S, Gao JF, Zhou ZX. Effects of DNA Damage and Oxidative Stress in Human Bronchial Epithelial Cells Exposed to PM 2.5 from Beijing, China, in Winter. Int J Environ Res Public Health 2020; 17:E4874. [PMID: 32640694 DOI: 10.3390/ijerph17134874] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 06/27/2020] [Indexed: 12/21/2022]
Abstract
Epidemiological studies have corroborated that respiratory diseases, including lung cancer, are related to fine particulate matter (<2.5 μm) (PM2.5) exposure. The toxic responses of PM2.5 are greatly influenced by the source of PM2.5. However, the effects of PM2.5 from Beijing on bronchial genotoxicity are scarce. In the present study, PM2.5 from Beijing was sampled and applied in vitro to investigate its genotoxicity and the mechanisms behind it. Human bronchial epithelial cells 16HBE were used as a model for exposure. Low (67.5 μg/mL), medium (116.9 μg/mL), and high (202.5 μg/mL) doses of PM2.5 were used for cell exposure. After PM2.5 exposure, cell viability, oxidative stress markers, DNA (deoxyribonucleic acid) strand breaks, 8-OH-dG levels, micronuclei formation, and DNA repair gene expression were measured. The results showed that PM2.5 significantly induced cytotoxicity in 16HBE. Moreover, the levels of reactive oxygen species (ROS), malondialdehyde (MDA), and cellular heme oxygenase (HO-1) were increased, and the level of glutathione (GSH) was decreased, which represented the occurrence of severe oxidative stress in 16HBE. The micronucleus rate was elevated, and DNA damage occurred as indicators of the comet assay, γ-H2AX and 8-OH-dG, were markedly enhanced by PM2.5, accompanied by the influence of 8-oxoguanine DNA glycosylase (OGG1), X-ray repair cross-complementing gene 1 (XRCC1), and poly (ADP-ribose) polymerase-1 (PARP1) expression. These results support the significant role of PM2.5 genotoxicity in 16HBE cells, which may occur through the combined effect on oxidative stress and the influence of DNA repair genes.
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Wang B, Li R, Cai Y, Li B, Qin S, Zheng K, Zeng M, Xiao F, Zhang Z, Xu X. Alteration of DNA methylation induced by PM 2.5 in human bronchial epithelial cells. Toxicol Res (Camb) 2020; 9:552-560. [PMID: 32905279 PMCID: PMC7467236 DOI: 10.1093/toxres/tfaa061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/14/2020] [Accepted: 07/19/2020] [Indexed: 12/26/2022] Open
Abstract
This current study explored the effects of fine particulate matter (PM2.5) on deoxyribonucleic acid methylation in human bronchial epithelial cells. Human bronchial epithelial cells were exposed to PM2.5 for 24 h after which, deoxyribonucleic acid samples were extracted, and the differences between methylation sites were detected using methylation chips. Subsequent gene ontology functional enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed for the differential methylation sites. Functional epigenetic modules analysis of the overall differential methylation site interactions was also conducted. A total of 127 differential methylation sites in 89 genes were screened in the PM2.5 10 μg/ml group, of which 55 sites demonstrated increased methylation, with methylation levels decreasing in a further 72 sites. Following an exposure of 50 μg/ml PM2.5, a total of 238 differentially methylated sites were screened in 168 genes, of which methylation levels increased in 127 sites, and decreased in 111. KEGG analysis showed that the top 10 enrichment pathways predominantly involve hepatocellular carcinoma pathways and endometrial cancer pathways, whereas functional epigenetic modules analysis screened eight genes (A2M, IL23A, TPIP6, IL27, MYD88, ILE2B, NLRC4, TNF) with the most interactions. Our results indicate that exposure to PM2.5 for 24 h in human bronchial epithelial cells induces marked changes in deoxyribonucleic acid methylation of multiple genes involved in apoptosis and carcinogenesis pathways, these findings can provide a new direction for further study of PM2.5 carcinogenic biomarkers.
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Affiliation(s)
- Bingyu Wang
- Department of Environmental Toxicology, Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Road, Shenzhen, Guangdong 518055, China
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
| | - Runbing Li
- Department of Environmental Toxicology, Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Road, Shenzhen, Guangdong 518055, China
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
| | - Ying Cai
- Department of Environmental Toxicology, Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Road, Shenzhen, Guangdong 518055, China
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
| | - Boru Li
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, 238 Shangmayuanling Lane, Changsha, Hunan 410078, China
| | - Shuangjian Qin
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, 238 Shangmayuanling Lane, Changsha, Hunan 410078, China
| | - Kai Zheng
- Department of Environmental Toxicology, Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Road, Shenzhen, Guangdong 518055, China
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
| | - Ming Zeng
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, 238 Shangmayuanling Lane, Changsha, Hunan 410078, China
| | - Fang Xiao
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, 238 Shangmayuanling Lane, Changsha, Hunan 410078, China
| | - Zhaohui Zhang
- Department of Preventive Medicine, School of Public Health, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, China
| | - Xinyun Xu
- Department of Environmental Toxicology, Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Road, Shenzhen, Guangdong 518055, China
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32
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Paranjapye A, Mutolo MJ, Ebron JS, Leir SH, Harris A. The FOXA1 transcriptional network coordinates key functions of primary human airway epithelial cells. Am J Physiol Lung Cell Mol Physiol 2020; 319:L126-L136. [PMID: 32432922 DOI: 10.1152/ajplung.00023.2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The differentiated functions of the human airway epithelium are coordinated by a complex network of transcription factors. These include the pioneer factors Forkhead box A1 and A2 (FOXA1 and FOXA2), which are well studied in several tissues, but their role in airway epithelial cells is poorly characterized. Here, we define the cistrome of FOXA1 and FOXA2 in primary human bronchial epithelial (HBE) cells by chromatin immunoprecipitation with deep-sequencing (ChIP-seq). Next, siRNA-mediated depletion of each factor is used to investigate their transcriptome by RNA-seq. We found that, as predicted from their DNA-binding motifs, genome-wide occupancy of the two factors showed substantial overlap; however, their global impact on gene expression differed. FOXA1 is an abundant transcript in HBE cells, while FOXA2 is expressed at low levels, and both these factors likely exhibit autoregulation and cross-regulation. FOXA1 regulated loci are involved in cell adhesion and the maintenance of epithelial cell identity, particularly through repression of genes associated with epithelial to mesenchymal transition (EMT). FOXA1 also directly targets other transcription factors with a known role in the airway epithelium such as SAM-pointed domain-containing Ets-like factor (SPDEF). The intersection of the cistrome and transcriptome for FOXA1 revealed enrichment of genes involved in epithelial development and tissue morphogenesis. Moreover, depletion of FOXA1 was shown to reduce the transepithelial resistance of HBE cells, confirming the role of this factor in maintaining epithelial barrier integrity.
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Affiliation(s)
- Alekh Paranjapye
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Michael J Mutolo
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Jey Sabith Ebron
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
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33
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Ahmadi S, Wu YS, Li M, Ip W, Lloyd-Kuzik A, Di Paola M, Du K, Xia S, Lew A, Bozoky Z, Forman-Kay J, Bear CE, Gonska T. Augmentation of Cystic Fibrosis Transmembrane Conductance Regulator Function in Human Bronchial Epithelial Cells via SLC6A14-Dependent Amino Acid Uptake. Implications for Treatment of Cystic Fibrosis. Am J Respir Cell Mol Biol 2020; 61:755-764. [PMID: 31189070 DOI: 10.1165/rcmb.2019-0094oc] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
SLC6A14-mediated l-arginine transport has been shown to augment the residual anion channel activity of the major mutant, F508del-CFTR, in the murine gastrointestinal tract. It is not yet known if this transporter augments residual and pharmacological corrected F508del-CFTR in primary airway epithelia. We sought to determine the role of l-arginine uptake via SLC6A14 in modifying F508del-CFTR channel activity in airway cells from patients with cystic fibrosis (CF). Human bronchial epithelial (HBE) cells from lung explants of patients without CF (HBE) and those with CF (CF-HBE) were used for H3-flux, airway surface liquid, and Ussing chamber studies. We used α-methyltryptophan as a specific inhibitor for SLC6A14. CFBE41o-, a commonly used CF airway cell line, was employed for studying the mechanism of the functional interaction between SLC6A14 and F508del-CFTR. SLC6A14 is functionally expressed in CF-HBE cells. l-arginine uptake via SLC6A14 augmented F508del-CFTR function at baseline and after treatment with lumacaftor. SLC6A14-mediated l-arginine uptake also increased the airway surface liquid in CF-HBE cells. Using CFBE41o cells, we showed that the positive SLC6A14 effect was mainly dependent on the nitric oxide (NO) synthase activity, nitrogen oxides, including NO, and phosphorylation by protein kinase G. These finding were confirmed in CF-HBE, as inducible NO synthase inhibition abrogated the functional interaction between SLC6A14 and pharmacological corrected F508del-CFTR. In summary, SLC6A14-mediated l-arginine transport augments residual F508del-CFTR channel function via a noncanonical, NO pathway. This effect is enhanced with increasing pharmacological rescue of F508del-CFTR to the membrane. The current study demonstrates how endogenous pathways can be used for the development of companion therapy in CF.
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Affiliation(s)
- Saumel Ahmadi
- Department of Physiology.,Programme in Molecular Medicine.,Programme in Genetics and Genome Biology, and
| | - Yu-Sheng Wu
- Department of Physiology.,Programme in Molecular Medicine
| | - Mingyuan Li
- Programme in Translational Medicine, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Wan Ip
- Programme in Translational Medicine, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Andrew Lloyd-Kuzik
- Department of Physiology.,Programme in Translational Medicine, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | | | - Kai Du
- Department of Biochemistry, and
| | - Sunny Xia
- Department of Physiology.,Programme in Molecular Medicine
| | | | | | - Julie Forman-Kay
- Department of Biochemistry, and.,Programme in Molecular Medicine
| | - Christine E Bear
- Department of Physiology.,Department of Biochemistry, and.,Programme in Molecular Medicine
| | - Tanja Gonska
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada; and.,Programme in Translational Medicine, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
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Nguyen CH, Zeng C, Boitano S, Field JA, Sierra-Alvarez R. Cytotoxicity Assessment of Gallium- and Indium-Based Nanoparticles Toward Human Bronchial Epithelial Cells Using an Impedance-Based Real-Time Cell Analyzer. Int J Toxicol 2020; 39:218-231. [PMID: 32228215 DOI: 10.1177/1091581820914255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The semiconductor manufacturing sector plans to introduce III/V film structures (eg, gallium arsenide (GaAs), indium arsenide (InAs) onto silicon wafers due to their high electron mobility and low power consumption. Aqueous solutions generated during chemical and mechanical planarization of silicon wafers can contain a mixture of metal oxide nanoparticles (NPs) and soluble indium, gallium, and arsenic. In this work, the cytotoxicity induced by Ga- and In-based NPs (GaAs, InAs, Ga2O3, In2O3) and soluble III-V salts on human bronchial epithelial cells (16HBE14o-) was evaluated using a cell impedance real-time cell analysis (RTCA) system. The RTCA system provided inhibition data at different concentrations for multiple time points, for example, GaAs (25 mg/L) caused 60% inhibition after 8 hours of exposure and 100% growth inhibition after 24 hours. Direct testing of As(III) and As(V) demonstrated significant cytotoxicity with 50% growth inhibition concentrations after 16-hour exposure (IC50) of 2.4 and 4.5 mg/L, respectively. Cell signaling with rapid rise and decrease in signal was unique to arsenic cytotoxicity, a precursor of strong cytotoxicity over the longer term. In contrast with arsenic, soluble gallium(III) and indium(III) were less toxic. Whereas the oxide NPs caused low cytotoxicity, the arsenide compounds were highly inhibitory (IC50 of GaAs and InAs = 6.2 and 68 mg/L, respectively). Dissolution experiments over 7 days revealed that arsenic was fully leached from GaAs NPs, whereas only 10% of the arsenic was leached out of InAs NPs. These results indicate that the cytotoxicity of GaAs and InAs NPs is largely due to the dissolution of toxic arsenic species.
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Affiliation(s)
- Chi H Nguyen
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Chao Zeng
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Scott Boitano
- Department of Physiology and The Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Jim A Field
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Reyes Sierra-Alvarez
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
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Brózman O, Kubickova B, Babica P, Laboha P. Microcystin-LR Does Not Alter Cell Survival and Intracellular Signaling in Human Bronchial Epithelial Cells. Toxins (Basel) 2020; 12:E165. [PMID: 32156079 PMCID: PMC7150819 DOI: 10.3390/toxins12030165] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 01/18/2023] Open
Abstract
Changes in ecological and environmental factors lead to an increased occurrence of cyanobacterial water blooms, while secondary metabolites-producing cyanobacteria pose a threat to both environmental and human health. Apart from oral and dermal exposure, humans may be exposed via inhalation and/or swallowing of contaminated water and aerosols. Although many studies deal with liver toxicity, less information about the effects in the respiratory system is available. We investigated the effects of a prevalent cyanotoxin, microcystin-LR (MC-LR), using respiratory system-relevant human bronchial epithelial (HBE) cells. The expression of specific organic-anion-transporting polypeptides was evaluated, and the western blot analysis revealed the formation and accumulation of MC-LR protein adducts in exposed cells. However, MC-LR up to 20 μM neither caused significant cytotoxic effects according to multiple viability endpoints after 48-h exposure, nor reduced impedance (cell layer integrity) over 96 h. Time-dependent increase of putative MC-LR adducts with protein phosphatases was not associated with activation of mitogen-activated protein kinases ERK1/2 and p38 during 48-h exposure in HBE cells. Future studies addressing human health risks associated with inhalation of toxic cyanobacteria and cyanotoxins should focus on complex environmental samples of cyanobacterial blooms and alterations of additional non-cytotoxic endpoints while adopting more advanced in vitro models.
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Affiliation(s)
- Ondřej Brózman
- RECETOX, Faculty of Science, Masaryk University, Brno 62500, Czech Republic; (O.B.); (B.K.); (P.B.)
| | - Barbara Kubickova
- RECETOX, Faculty of Science, Masaryk University, Brno 62500, Czech Republic; (O.B.); (B.K.); (P.B.)
| | - Pavel Babica
- RECETOX, Faculty of Science, Masaryk University, Brno 62500, Czech Republic; (O.B.); (B.K.); (P.B.)
- Department of Experimental Phycology and Ecotoxicology, Institute of Botany, Czech Academy of Sciences, Brno 60200, Czech Republic
| | - Petra Laboha
- RECETOX, Faculty of Science, Masaryk University, Brno 62500, Czech Republic; (O.B.); (B.K.); (P.B.)
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Koh KD, Siddiqui S, Cheng D, Bonser LR, Sun DI, Zlock LT, Finkbeiner WE, Woodruff PG, Erle DJ. Efficient RNP-directed Human Gene Targeting Reveals SPDEF Is Required for IL-13-induced Mucostasis. Am J Respir Cell Mol Biol 2020; 62:373-381. [PMID: 31596609 PMCID: PMC7055692 DOI: 10.1165/rcmb.2019-0266oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 10/09/2019] [Indexed: 01/31/2023] Open
Abstract
Primary human bronchial epithelial cell (HBEC) cultures are a useful model for studies of lung health and major airway diseases. However, mechanistic studies have been limited by our ability to selectively disrupt specific genes in these cells. Here we optimize methods for gene targeting in HBECs by direct delivery of single guide RNA (sgRNA) and rCas9 (recombinant Cas9) complexes by electroporation, without a requirement for plasmids, viruses, or antibiotic selection. Variations in the method of delivery, sgRNA and rCas9 concentrations, and sgRNA sequences all had effects on targeting efficiency, allowing for predictable control of the extent of gene targeting and for near-complete disruption of gene expression. To demonstrate the value of this system, we targeted SPDEF, which encodes a transcription factor previously shown to be essential for the differentiation of MUC5AC-producing goblet cells in mouse models of asthma. Targeting SPDEF led to proportional decreases in MUC5AC expression in HBECs stimulated with IL-13, a central mediator of allergic asthma. Near-complete targeting of SPDEF abolished IL-13-induced MUC5AC expression and goblet cell differentiation. In addition, targeting of SPDEF prevented IL-13-induced impairment of mucociliary clearance, which is likely to be an important contributor to airway obstruction, morbidity, and mortality in asthma. We conclude that direct delivery of sgRNA and rCas9 complexes allows for predictable and efficient gene targeting and enables mechanistic studies of disease-relevant pathways in primary HBECs.
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Affiliation(s)
- Kyung Duk Koh
- Lung Biology Center
- Cardiovascular Research Institute
| | - Sana Siddiqui
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
| | - Dan Cheng
- Lung Biology Center
- Cardiovascular Research Institute
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | | | - Dingyuan I. Sun
- Department of Pathology, University of California San Francisco, San Francisco, California; and
| | - Lorna T. Zlock
- Department of Pathology, University of California San Francisco, San Francisco, California; and
| | - Walter E. Finkbeiner
- Department of Pathology, University of California San Francisco, San Francisco, California; and
| | - Prescott G. Woodruff
- Cardiovascular Research Institute
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
| | - David J. Erle
- Lung Biology Center
- Cardiovascular Research Institute
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
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Jia R, Zhao XF. MicroRNA-497 functions as an inflammatory suppressor via targeting DDX3Y and modulating toll-like receptor 4/NF-κB in cigarette smoke extract-stimulated human bronchial epithelial cells. J Gene Med 2019; 22:e3137. [PMID: 31696986 DOI: 10.1002/jgm.3137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND We aimed to investigate the biological effect of miR-497 in cigarette smoke extract (CSE)-damaged human bronchial epithelial (HBE) cells and the underlying molecular mechanism. METHODS MiR-497 mimic was transfected into HBE cells to up-regulate miR-497 expression. Cigarette smoke extract (CSE, 20 μg/mL) was utilized to treat HBE cells to form the injury model. Cell proliferation and apoptosis were detected by CCK8 and flow cytometry assays. DDX3Y mRNA expression was determined by a quantitative reverse transcriptase-polymerase chain reaction. The interaction between miR-497 and DDX3Y was verified by a luciferase reporter assay. Protein expression levels were tested by western blotting. RESULTS CSE treatment decreased miR-497 level in HBE cells. CSE exposure restrained cell proliferation, promoted cell apoptosis and enhanced the relative expression of TLR4 and p-NF-κB p65. DDX3Y was predicted as a target of miR-497. The mRNA and protein expression of DDX3Y was negatively modulated by miR-497 in CSE-injured HBE cells. Up-regulation of miR-497 by miR-497 mimic increased cell proliferation and reduced cell apoptosis in CSE-treated HBE cells, which were rescued by DDX3Y high expression in CSE-treated HBE cells. Consistently, Bcl-2 protein level was heightened, whereas Bax and actived caspase-3/9 protein levels were decreased by miR-497 mimic in CSE-stimulated HBE cells, which was reversed by DDX3Y over-expression in CSE-stimulated HBE cells. The relative expression of TLR4 and p-NF-κB p65 was decreased by miR-497 mimic, whereas they were rescued by DDX3Y over-expression in CSE-damaged HBE cells. CONCLUSIONS The results of the present study demonstrate that up-regulation of miR-497 exhibits a protective effect on CSE-damaged HBE cells, which might be achieved by targeting DDX3Y and regulating the TLR4/NF-κB pathway.
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Affiliation(s)
- Rong Jia
- Department of Geriatrics, Lianyungang Second People's Hospital, Lianyungang, Jiangsu, China
| | - Xiao-Fei Zhao
- Department of Geriatrics, Lianyungang Second People's Hospital, Lianyungang, Jiangsu, China
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Guan R, Lin R, Jin R, Lu L, Liu X, Hu S, Sun L. Chitinase-like protein YKL-40 regulates human bronchial epithelial cells proliferation, apoptosis, and migration through TGF-β1/Smads pathway. Hum Exp Toxicol 2019; 39:451-463. [PMID: 31797699 DOI: 10.1177/0960327119891218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to study the effects of chitinase-like protein YKL-40 on proliferation, apoptosis, and migration of human bronchial epithelial cell line (BEAS-2B), and the underlying mechanisms, we cultured BEAS-2B alone or with different concentrations of YKL-40. thiazolyl blue tetrazolium bromide (MTT) assay was used to examine the cell proliferation. Annexin V-fluorescein isothiocyanate isomer (FITC)/propidium iodide staining and scratch assay were performed to test the cell apoptosis and migration. The concentrations of transforming growth factor-β1 (TGF-β1), Smad3, Smad7, alpha-smooth muscle actin (α-SMA), interleukin-4 (IL-4), IL-6, and IL-8 in the cell culture supernatant were detected by enzyme-linked immunosorbent assay. The messenger RNA and protein levels of YKL-40, TGF-β1, Smad3, Smad7, and α-SMA were detected by reverse transcription polymerase chain reaction and Western blot. BEAS-2B cells cultured with different concentrations of YKL-40 showed significantly higher cell proliferation and migration and inflammatory cytokines compared with that of control group, while the cell apoptosis was significantly lower than that of control group (p < 0.05). In addition, BEAS-2B cells cultured with YKL-40 had increased TGF-β1, Smad3, Smad7, and α-SMA levels in the supernatant, compared with that of BEAS-2B cells cultured alone (p < 0.05). Furthermore, LY364947, as TGF-β1/Smads signaling pathway inhibitor, decreased cell proliferation and migration ability and enhanced cell apoptosis of BEAS-2B cells compared with control group (p < 0.05). However, YKL-40 administration reversed the effect of LY364947 on the biological behavior of BEAS-2B cells. YKL-40 could affect the biological behaviors of BEAS-2B cells, which might be related to the TGF-β1/Smads pathway.
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Affiliation(s)
- R Guan
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China.,Both the authors contributed equally to this work
| | - R Lin
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China.,Both the authors contributed equally to this work
| | - R Jin
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Lu
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - X Liu
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - S Hu
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Sun
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
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Chen H, Li M. [Role of mammalian target of rapamycin activation in menthol-induced expressions of airway inflammation-related factors in human bronchial epithelial cells in vitro]. Nan Fang Yi Ke Da Xue Xue Bao 2019; 39:1344-1349. [PMID: 31852644 DOI: 10.12122/j.issn.1673-4254.2019.11.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the role of mammalian target of rapamycin (mTOR) activation in menthol-induced expression of airway inflammation- related factors in human bronchial epithelial cells and explore its mechanism. METHODS Cultured human bronchial epithelial cells (BEAS-2B) were divided into normal control group, menthol group, rapamycin group, and menthol+rapamycin group with corresponding treatments. The cell viability was measured with CCK-8 method. The mRNA levels of transient receptor potential melastatin 8 (TRPM8), tumor necrosis factor (TNF)-α and interleukin (IL)-1β were detected by RT-PCR, and the protein expressions of phosphorylated mTOR (p-mTOR), TRPM8, TNF-α and IL-1β were determined using Western blotting. The intracellular Ca2+ fluorescence intensity was measured by flow cytometry. RESULTS Compared with the normal control cells, menthol- treated cells showed significantly increased TNF-α, IL-1β, and p-mTOR expression and elevated intracellular Ca2+ concentration (P < 0.05), and the rapamycin-treated cells exhibited significantly decreased p-mTOR expression (P < 0.05). No significant difference was found in TNF-α, IL-1β or intracellular Ca2+ concentration between the normal control and rapamycin-treated cells (P>0.05). Compared with the menthol-treated cells, the cells treated with both menthol and rapamycin showed significantly decreased TNF- α, IL-1β, and p-mTOR expression and obviously lowered intracellular Ca2+ concentration (P < 0.05). CONCLUSIONS Menthol promotes the expressions of airway inflammationrelated factors IL-1β and TNF-α possibly by activating mTOR to cause the increase of intracellular Ca2+ concentration.
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Affiliation(s)
- Haibo Chen
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Minchao Li
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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40
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Chua SCJH, Tan HQ, Engelberg D, Lim LHK. Alternative Experimental Models for Studying Influenza Proteins, Host-Virus Interactions and Anti-Influenza Drugs. Pharmaceuticals (Basel) 2019; 12:E147. [PMID: 31575020 PMCID: PMC6958409 DOI: 10.3390/ph12040147] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 12/14/2022] Open
Abstract
Ninety years after the discovery of the virus causing the influenza disease, this malady remains one of the biggest public health threats to mankind. Currently available drugs and vaccines only partially reduce deaths and hospitalizations. Some of the reasons for this disturbing situation stem from the sophistication of the viral machinery, but another reason is the lack of a complete understanding of the molecular and physiological basis of viral infections and host-pathogen interactions. Even the functions of the influenza proteins, their mechanisms of action and interaction with host proteins have not been fully revealed. These questions have traditionally been studied in mammalian animal models, mainly ferrets and mice (as well as pigs and non-human primates) and in cell lines. Although obviously relevant as models to humans, these experimental systems are very complex and are not conveniently accessible to various genetic, molecular and biochemical approaches. The fact that influenza remains an unsolved problem, in combination with the limitations of the conventional experimental models, motivated increasing attempts to use the power of other models, such as low eukaryotes, including invertebrate, and primary cell cultures. In this review, we summarized the efforts to study influenza in yeast, Drosophila, zebrafish and primary human tissue cultures and the major contributions these studies have made toward a better understanding of the disease. We feel that these models are still under-utilized and we highlight the unique potential each model has for better comprehending virus-host interactions and viral protein function.
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Affiliation(s)
- Sonja C J H Chua
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
- NUS Immunology Program, Life Sciences Institute, National University of Singapore, Singapore 117456, Singapore.
- CREATE-NUS-HUJ Molecular Mechanisms of Inflammatory Diseases Programme, National University of Singapore, Singapore 138602, Singapore.
| | - Hui Qing Tan
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
- NUS Immunology Program, Life Sciences Institute, National University of Singapore, Singapore 117456, Singapore.
| | - David Engelberg
- CREATE-NUS-HUJ Molecular Mechanisms of Inflammatory Diseases Programme, National University of Singapore, Singapore 138602, Singapore.
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore.
- Department of Biological Chemistry, The Institute of Life Science, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
| | - Lina H K Lim
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
- NUS Immunology Program, Life Sciences Institute, National University of Singapore, Singapore 117456, Singapore.
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Sekine T, Hirata T, Ishikawa S, Ito S, Ishimori K, Matsumura K, Muraki K. Regulation of NRF2, AP-1 and NF-κB by cigarette smoke exposure in three-dimensional human bronchial epithelial cells. J Appl Toxicol 2019; 39:717-725. [PMID: 30575053 DOI: 10.1002/jat.3761] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/07/2018] [Accepted: 11/08/2018] [Indexed: 12/18/2022]
Abstract
Cigarette smoke (CS) is a complex mixture of chemicals and interacts with various physiological processes. We previously reported that nuclear factor erythroid 2-related factor 2 (NRF2) was the most sensitive transcription factor to aqueous CS extract (AqCSE) exposure in monolayer cultured human bronchial epithelial cell lines. Recently, in vitro three-dimensional (3D) culture models have been used to supplement pharmacological and toxicological assessments. Bronchial epithelium models in particular are useful for the evaluation of substances that directly contact the respiratory tract, such as CS. In the present study, we used 3D-cultured human bronchial epithelial cells (HBECs) to assess activation of transcription factors and relevant gene expression in response to AqCSE, primarily focusing on NRF2 and nuclear factor-kappa B (NF-κB) pathways. The 3D-cultured HBECs exposed to AqCSE showed expression of NRF2 and its nuclear translocation in addition to upregulation of genes related to oxidative stress. Our results suggest that the NRF2 pathway was the dominant pathway when 3D-cultured HBECs were exposed to AqCSE at a low dose, supporting our previous findings that NRF2 was the most sensitive transcription factor in response to AqCSE. Expression and nuclear translocation of NF-κB were not increased, although proinflammatory genes were upregulated. However, another inflammation-related transcription factor, activation protein 1, was induced by AqCSE. Gene classification analysis suggested that induction of the inflammatory response by AqCSE was dependent on NRF2 and activation protein 1 rather than NF-κB.
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Affiliation(s)
- Takashi Sekine
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, 1-100 Kusumoto, Chikusa, Nagoya, 464-8650, Japan
| | - Tadashi Hirata
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
| | - Shinkichi Ishikawa
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
| | - Shigeaki Ito
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
| | - Kanae Ishimori
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
| | - Kazushi Matsumura
- Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yohohama, Kanagawa, 227-8512, Japan
| | - Katsuhiko Muraki
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, 1-100 Kusumoto, Chikusa, Nagoya, 464-8650, Japan
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Qin L, Qiu K, Hu C, Wang L, Wu G, Tan Y. Respiratory syncytial virus promoted the differentiation of Th17 cells in airway microenvironment through activation of Notch-1/Delta3. J Med Microbiol 2019; 68:649-656. [PMID: 30843783 DOI: 10.1099/jmm.0.000959] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Respiratory syncytial virus (RSV) infection is associated with serious lung disease in infants and immunocompromised individuals and is linked to development of asthma. Infection of RSV has been shown to induce Th lymphocyte differentiation. The present study was designed to determine the effects of RSV on the expression of Notch-1 and the related mechanisms on subsequent differentiation of Th lymphocytes. METHODS A RSV-infected animal model was established and investigated at 7, 28 and 60 days post infection. Real-time qPCR and Western blot were used to observe the expression levels of Notch-1 in CD4+ T cells and its five ligands in lung tissues. The methylation levels of CpG islands in autoimmune regulator (AIRE) and Notch-1 promoters were analysed by time-of-flight mass spectrometry. The differentiation of Th lymphocytes was assayed by real-time qPCR. The distribution of JAG1 and DLL3 in the lung tissues were assayed by immunohistochemistry. The correlation between Th17 and DLL3 was analysed by simple correlation. RESULTS The results showed that RSV promoted the expression and de-methylation of Notch-1 promoters in CD4+ T cells. Moreover, RSV infection promoted Th1 differentiation at day 7 and day 28; Th17 differentiation at day 7, day 28 and day 60; Th2 differentiation at day 28 and day 60. At the same time, RSV infection promoted the expression of JAG1 and DLL3. Activation of Notch-1/ DLL 3 in lungs may be associated with the differentiation of Th17 lymphocytes. CONCLUSIONS Our data showed that activation of RSV stimulated the differentiation of Th17 in airway microenvironment through activation Notch-1/DLL3, which may be associated with the occurrence and development of RSV-induced asthma.
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Affiliation(s)
- Ling Qin
- Respiratory Department, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Kezi Qiu
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, PR China
| | - Chengping Hu
- Respiratory Department, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Lili Wang
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, PR China
| | - Guojun Wu
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, PR China
| | - Yurong Tan
- Respiratory Department, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, PR China
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43
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Berical A, Lee RE, Randell SH, Hawkins F. Challenges Facing Airway Epithelial Cell-Based Therapy for Cystic Fibrosis. Front Pharmacol 2019; 10:74. [PMID: 30800069 PMCID: PMC6376457 DOI: 10.3389/fphar.2019.00074] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/21/2019] [Indexed: 12/12/2022] Open
Abstract
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene cause the life-limiting hereditary disease, cystic fibrosis (CF). Decreased or absent functional CFTR protein in airway epithelial cells leads to abnormally viscous mucus and impaired mucociliary transport, resulting in bacterial infections and inflammation causing progressive lung damage. There are more than 2000 known variants in the CFTR gene. A subset of CF individuals with specific CFTR mutations qualify for pharmacotherapies of variable efficacy. These drugs, termed CFTR modulators, address key defects in protein folding, trafficking, abundance, and function at the apical cell membrane resulting from specific CFTR mutations. However, some CFTR mutations result in little or no CFTR mRNA or protein expression for which a pharmaceutical strategy is more challenging and remote. One approach to rescue CFTR function in the airway epithelium is to replace cells that carry a mutant CFTR sequence with cells that express a normal copy of the gene. Cell-based therapy theoretically has the potential to serve as a one-time cure for CF lung disease regardless of the causative CFTR mutation. In this review, we explore major challenges and recent progress toward this ambitious goal. The ideal therapeutic cell would: (1) be autologous to avoid the complications of rejection and immune-suppression; (2) be safely modified to express functional CFTR; (3) be expandable ex vivo to generate sufficient cell quantities to restore CFTR function; and (4) have the capacity to engraft, proliferate and persist long-term in recipient airways without complications. Herein, we explore human bronchial epithelial cells (HBECs) and induced pluripotent stem cells (iPSCs) as candidate cell therapies for CF and explore the challenges facing their delivery to the human airway.
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Affiliation(s)
- Andrew Berical
- Center for Regenerative Medicine, Boston Medical Center and Boston University, Boston, MA, United States.,The Pulmonary Center, Boston University School of Medicine, Boston, MA, United States
| | - Rhianna E Lee
- Cystic Fibrosis Research Center, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Scott H Randell
- Cystic Fibrosis Research Center, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Finn Hawkins
- Center for Regenerative Medicine, Boston Medical Center and Boston University, Boston, MA, United States.,The Pulmonary Center, Boston University School of Medicine, Boston, MA, United States
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Liu B, Billington CK, Henry AP, Bhaker SK, Kheirallah AK, Swan C, Hall IP. Chloride intracellular channel 1 (CLIC1) contributes to modulation of cyclic AMP-activated whole-cell chloride currents in human bronchial epithelial cells. Physiol Rep 2019; 6. [PMID: 29368798 PMCID: PMC5789713 DOI: 10.14814/phy2.13508] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 10/25/2017] [Accepted: 10/26/2017] [Indexed: 12/14/2022] Open
Abstract
Chloride channels are known to play critical physiological roles in many cell types. Here, we describe the expression of anion channels using RNA Seq in primary cultures of human bronchial epithelial cells (hBECs). Chloride intracellular channel (CLIC) family members were the most abundant chloride channel transcripts, and CLIC1 showed the highest level of expression. In addition, we characterize the chloride currents in hBECs and determine how inhibition of CLIC1 via pharmacological and molecular approaches impacts these. We demonstrate that CLIC1 is able to modulate cyclic AMP‐induced chloride currents and suggest that CLIC1 modulation could be important for chloride homeostasis in this cell type.
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Affiliation(s)
- Bo Liu
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Charlotte K Billington
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Amanda P Henry
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Sangita K Bhaker
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Alexander K Kheirallah
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Caroline Swan
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Ian P Hall
- Division of Respiratory Medicine, The University of Nottingham, Nottingham, United Kingdom
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Castaldi PJ, Guo F, Qiao D, Du F, Naing ZZC, Li Y, Pham B, Mikkelsen TS, Cho MH, Silverman EK, Zhou X. Identification of Functional Variants in the FAM13A Chronic Obstructive Pulmonary Disease Genome-Wide Association Study Locus by Massively Parallel Reporter Assays. Am J Respir Crit Care Med 2019; 199:52-61. [PMID: 30079747 PMCID: PMC6353020 DOI: 10.1164/rccm.201802-0337oc] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/01/2018] [Indexed: 12/26/2022] Open
Abstract
RATIONALE The identification of causal variants responsible for disease associations from genome-wide association studies (GWASs) facilitates functional understanding of the biological mechanisms by which those genetic variants influence disease susceptibility. OBJECTIVE We aim to identify causal variants in or near the FAM13A (family with sequence similarity member 13A) GWAS locus associated with chronic obstructive pulmonary disease (COPD). METHODS We used an integrated approach featuring conditional genetic analysis, massively parallel reporter assays (MPRAs), traditional reporter assays, chromatin conformation capture assays, and clustered regularly interspaced short palindromic repeats (CRISPR)-based gene editing to characterize COPD-associated regulatory variants in the FAM13A region in human bronchial epithelial cell lines. MEASUREMENTS AND MAIN RESULTS Conditional genetic association suggests the presence of two independent COPD association signals in FAM13A. MPRAs identified 45 regulatory variants within FAM13A, among which six variants were prioritized for further investigation. Three COPD-associated variants demonstrated significant allele-specific activity in reporter assays. One of three variants, rs2013701, was tested in the endogenous genomic context by CRISPR-based genome editing that confirmed its allele-specific effects on FAM13A expression and on cell proliferation, providing functional characterization for this COPD-associated variant. CONCLUSIONS The human GWAS association near FAM13A may contain independent association signals. MPRAs identified multiple functional variants in this region, including rs2013701, a putative COPD-causing variant with allele-specific regulatory activity.
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Affiliation(s)
- Peter J. Castaldi
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts; and
| | - Feng Guo
- Channing Division of Network Medicine and
| | - Dandi Qiao
- Channing Division of Network Medicine and
| | - Fei Du
- Channing Division of Network Medicine and
| | | | - Yan Li
- Channing Division of Network Medicine and
| | - Betty Pham
- Channing Division of Network Medicine and
| | | | - Michael H. Cho
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts; and
| | - Edwin K. Silverman
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts; and
| | - Xiaobo Zhou
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts; and
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Peng LH, Qin XQ, Tan RR, Liu C, Liu HJ, Qu X. Calcitonin Gene-Related Peptide Regulates the Potential Antigen Uptake Ability of Human Bronchial Epithelial Cells. J Interferon Cytokine Res 2018; 38:463-468. [PMID: 30256701 DOI: 10.1089/jir.2018.0020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In this study we tried to explore whether calcitonin gene-related peptide (CGRP) regulates the potential antigen uptaking ability of human bronchial epithelial cells (HBECs) and promoting the differentiation of Th1/Th2. We found that CGRP increased the uptake of fluorescein isothiocyanate labeled ovalbumin (FITC-OVA) by HBECs using fluorescence microscopy and flow cytometry analysis. MTT assay showed that T cells proliferated in a dose-dependent manner in the presence of OVA-pretreated HBECs and CGRP inhibited the proliferation of T cells. CGRP decreased secretion of IFN-γ, while it had no influence on secretion of IL-4 by ELISA. Our data suggest that CGRP enhanced HBECs antigen uptake ability and inhibits HBECs induced T cells proliferation.
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Affiliation(s)
- Li-Hua Peng
- 1 Department of Physiology, Hunan Yongzhou Vocational Technical College , Yongzhou, China
| | - Xiao-Qun Qin
- 2 Department of Physiology, Xiangya School of Medicine, Central South University , Changsha, Hunan, China
| | - Ru-Rong Tan
- 2 Department of Physiology, Xiangya School of Medicine, Central South University , Changsha, Hunan, China
| | - Chi Liu
- 2 Department of Physiology, Xiangya School of Medicine, Central South University , Changsha, Hunan, China
| | - Hui-Jun Liu
- 2 Department of Physiology, Xiangya School of Medicine, Central South University , Changsha, Hunan, China
| | - Xiangping Qu
- 2 Department of Physiology, Xiangya School of Medicine, Central South University , Changsha, Hunan, China
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Abstract
The nucleotide-binding domain and leucine-rich repeat protein 3 (NLRP3) inflammasome has developed as an important bridge between innate immune and infection recently, and has the ability to drive proteolytic procaspase-1 into bioactive caspase-1, then responsible for proteolytic processing of inflammatory cytokines IL-1β and IL-18. Fungal β-glucan, a major component of fungal cell wall, triggers inflammatory response in multiple immune cells, but rarely described in epithelial cells. Also, the relationship between fungal β-glucan and NLRP3 inflammasome is not clear yet. In this study, we first identified that curdlan, a large particulate β-glucan, could activate the NLRP3 inflammasome in LPS-primed human bronchial epithelial cells (HBECs). RT-PCR and Western Blot showed that curdlan upregulate the mRNA as well as intracellular protein expression of NLRP3 and IL-1β in HBECs, along with the activity of caspase-1, and the level of mature IL-1β in cell supernatants was higher by ELISA detection. Further studies demonstrated that the activation of NLRP3 inflammasome could be attenuated by NAC, an inhibitor of ROS. Thus, it indicated curdlan activate NLRP3 inflammasome through a pathway requiring ROS production in HBECs. These findings may provide a new therapeutic target, NLRP3 inflammasome, in invasive pulmonary fungal infections.
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48
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Li X, Zheng M, Pu J, Zhou Y, Hong W, Fu X, Peng Y, Zhou W, Pan H, Li B, Ran P. Identification of abnormally expressed lncRNAs induced by PM2.5 in human bronchial epithelial cells. Biosci Rep 2018; 38:BSR20171577. [PMID: 29899163 DOI: 10.1042/BSR20171577] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 05/21/2018] [Accepted: 06/11/2018] [Indexed: 01/17/2023] Open
Abstract
To investigate the effect of stimulation of human bronchial epithelial cells (HBECs) by arterial traffic ambient PM2.5 (TAPM2.5) and wood smoke PM2.5 (WSPM2.5) on the expression of long non-coding RNAs (lncRNAs) in order to find new therapeutic targets for treatment of chronic obstructive pulmonary disease (COPD). HBECs were exposed to TAPM2.5 and WSPM2.5 at a series of concentrations. The microarray analysis was used to detect the lncRNA and mRNA expression profiles. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis and gene ontology (GO) enrichment were conducted to analyze the differentially expressed lncRNAs and mRNAs. Quantitative real-time PCR (qRT-PCR) was performed to confirm the differential expression of lncRNAs. Western blot was performed to study the expression of autophagy and apoptosis-associated proteins. Flow cytometry was used to detect the apoptotic cells. The results indicated that fine particulate matter (PM2.5)-induced cell damage of HBECs occurred in a dose-dependent manner. The microarray analysis indicated that treatment with TAPM2.5 and WSPM2.5 led to the alteration of lncRNA and mRNA expression profiles. LncRNA maternally expressed gene 3 (MEG3) was significantly up-regulated in HBECs after PM2.5 treatment. The results of Western blot showed that PM2.5 induced cell apoptosis and autophagy by up-regulating apoptosis-associated gene, caspase-3, and down-regulating autophagy-associated markers, Bcl-2 and LC3 expression. In addition, we demonstrated that TAPM2.5 and WSPM2.5 accelerated apoptosis of human bronchial (HBE) cells, silencing of MEG3 suppressed apoptosis and autophagy of HBE cells. These findings suggested that the lncRNA MEG3 mediates PM2.5-induced cell apoptosis and autophagy, and probably through regulating the expression of p53.
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49
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Peters-Hall JR, Coquelin ML, Torres MJ, LaRanger R, Alabi BR, Sho S, Calva-Moreno JF, Thomas PJ, Shay JW. Long-term culture and cloning of primary human bronchial basal cells that maintain multipotent differentiation capacity and CFTR channel function. Am J Physiol Lung Cell Mol Physiol 2018; 315:L313-L327. [PMID: 29722564 PMCID: PMC6139663 DOI: 10.1152/ajplung.00355.2017] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 04/27/2018] [Accepted: 04/29/2018] [Indexed: 12/27/2022] Open
Abstract
While primary cystic fibrosis (CF) and non-CF human bronchial epithelial basal cells (HBECs) accurately represent in vivo phenotypes, one barrier to their wider use has been a limited ability to clone and expand cells in sufficient numbers to produce rare genotypes using genome-editing tools. Recently, conditional reprogramming of cells (CRC) with a Rho-associated protein kinase (ROCK) inhibitor and culture on an irradiated fibroblast feeder layer resulted in extension of the life span of HBECs, but differentiation capacity and CF transmembrane conductance regulator (CFTR) function decreased as a function of passage. This report details modifications to the standard HBEC CRC protocol (Mod CRC), including the use of bronchial epithelial cell growth medium, instead of F medium, and 2% O2, instead of 21% O2, that extend HBEC life span while preserving multipotent differentiation capacity and CFTR function. Critically, Mod CRC conditions support clonal growth of primary HBECs from a single cell, and the resulting clonal HBEC population maintains multipotent differentiation capacity, including CFTR function, permitting gene editing of these cells. As a proof-of-concept, CRISPR/Cas9 genome editing and cloning were used to introduce insertions/deletions in CFTR exon 11. Mod CRC conditions overcome many barriers to the expanded use of HBECs for basic research and drug screens. Importantly, Mod CRC conditions support the creation of isogenic cell lines in which CFTR is mutant or wild-type in the same genetic background with no history of CF to enable determination of the primary defects of mutant CFTR.
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Affiliation(s)
- Jennifer R Peters-Hall
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Melissa L Coquelin
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Michael J Torres
- Department of Physiology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Ryan LaRanger
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Busola R Alabi
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Sei Sho
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Jose F Calva-Moreno
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Philip J Thomas
- Department of Physiology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Jerry W Shay
- Department of Cell Biology, University of Texas Southwestern Medical Center , Dallas, Texas
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50
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Nguyen A, Guedán A, Mousnier A, Swieboda D, Zhang Q, Horkai D, Le Novere N, Solari R, Wakelam MJO. Host lipidome analysis during rhinovirus replication in HBECs identifies potential therapeutic targets. J Lipid Res 2018; 59:1671-1684. [PMID: 29946055 DOI: 10.1194/jlr.m085910] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/19/2018] [Indexed: 12/12/2022] Open
Abstract
In patients with asthma or chronic obstructive pulmonary disease, rhinovirus (RV) infections can provoke acute worsening of disease, and limited treatment options exist. Viral replication in the host cell induces significant remodeling of intracellular membranes, but few studies have explored this mechanistically or as a therapeutic opportunity. We performed unbiased lipidomic analysis on human bronchial epithelial cells infected over a 6 h period with the RV-A1b strain of RV to determine changes in 493 distinct lipid species. Through pathway and network analysis, we identified temporal changes in the apparent activities of a number of lipid metabolizing and signaling enzymes. In particular, analysis highlighted FA synthesis and ceramide metabolism as potential anti-rhinoviral targets. To validate the importance of these enzymes in viral replication, we explored the effects of commercially available enzyme inhibitors upon RV-A1b infection and replication. Ceranib-1, D609, and C75 were the most potent inhibitors, which confirmed that FAS and ceramidase are potential inhibitory targets in rhinoviral infections. More broadly, this study demonstrates the potential of lipidomics and pathway analysis to identify novel targets to treat human disorders.
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Affiliation(s)
- An Nguyen
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Anabel Guedán
- Medical Research Council and Asthma United Kingdom Centre in Allergic Mechanisms of Asthma, Airway Disease Infection Section, National Heart and Lung Institute, Imperial College, London, London W2 1PG, United Kingdom
| | - Aurelie Mousnier
- Medical Research Council and Asthma United Kingdom Centre in Allergic Mechanisms of Asthma, Airway Disease Infection Section, National Heart and Lung Institute, Imperial College, London, London W2 1PG, United Kingdom
| | - Dawid Swieboda
- Medical Research Council and Asthma United Kingdom Centre in Allergic Mechanisms of Asthma, Airway Disease Infection Section, National Heart and Lung Institute, Imperial College, London, London W2 1PG, United Kingdom
| | - Qifeng Zhang
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Dorottya Horkai
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Nicolas Le Novere
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Roberto Solari
- Medical Research Council and Asthma United Kingdom Centre in Allergic Mechanisms of Asthma, Airway Disease Infection Section, National Heart and Lung Institute, Imperial College, London, London W2 1PG, United Kingdom
| | - Michael J O Wakelam
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom.
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